Maintain a Clear Pool
Your pool chemistry can change quickly. Test your pool water weekly to ensure your Free Chlorine level remains between 1 – 4 ppm. Apply a preventative algaecide weekly to fight algae and keep your pool clear.
Maintain a regular cleaning regimen. Skim water surface, brush walls, vacuum and empty skimmer baskets at least once per week. Download the Clorox® Pool app on the Apple App Store or Google Play for expert water analysis and product and dosage recommendations.
This season, spend less time maintaining and more time enjoying your swimming pool!
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Product reviews
Write ReviewNo more algae
Temperature 90-105 degrees plus rainy weekend equals algae. Used Clorox algae remover and clarifier, within two days, I got my beautiful blue clear water back.
Ease of Use: 5
Effectiveness: 5
Real
Real Real Real Real Real Real Real Real Real Real Real Real Real Real Real Real Real Real
Ease of Use: 5
Effectiveness: 5
Na
I would recommend this product for any one that has a pool.
Ease of Use: 3
Effectiveness: 5
XtraBlue Algaecide
This is a product, that you use weekly as part of a regular maintenance routine. You have to brush surfaces weekly to remove dirt and debris that can cause algae. Miracle in a bottle! Fast and very easy to use.
Ease of Use: 5
Effectiveness: 5
Green to Blue
This is an affordable algicide, Its quick to work and when used as preventative maintenance, the bottle lasts months. I also use their phosphate remover and I think that works to prevent the algae before it starts. Sometimes I forget to add the Phosphate remover because its expensive and this is the fix.
Ease of Use: 5
Effectiveness: 5
Sparkling Clear Pool and easy to apply…thank you
Love this product…my pool is sparkling now. So easy to apply. My granddaughter was able to do it herself. Will definitely purchase again when needed. Thank you Clorex for allowing me to try this great product.
Ease of Use: 5
Effectiveness: 5
From green to clean
So opening my pool this spring it was green. Thank you so much for the Algaecide. My pool went from green to clean a beautiful blue. And it didn’t take long, it literally took about 3-4 days with my pump running 24hrs. It really works.
Ease of Use: 5
Effectiveness: 5
Algae gone
My go to algae killer! I love to pair it with my shock each week to maintain my pool nice and blue! I don’t like my pool smelling like too much chemicals so this helps keep that chlorine level down and my pool crystal
Ease of Use: 5
Effectiveness: 5
No more algae problems
I have been using XtraBlue Algaecide for a few months now and I am very happy with the results. It keeps my pool water clear and free of algae, even in the hot and humid weather. It is easy to use, just follow the instructions on the label and add the right amount every week. It does not affect the pH or chlorine levels of my pool, and it does not stain or foam. It is also safe for my family and pets, as it is made of natural ingredients that do not harm the environment. I highly recommend this product to anyone who wants to enjoy a clean and healthy pool.
Ease of Use: 5
Effectiveness: 5
Amazing
This algaecide is amazing. We were gone for 2 weeks and our pool was green when we returned. I followed the directions on the package and it cleared up our pool perfectly. I will definitely purchase this product again.
Ease of Use: 5
Effectiveness: 5
Love this product!
We had an issue before with algae, this was a life saver and has helped us keep our pool clear and sanitized! You pour this in and let it do it’s own thing. We have used Clorox pool supplies for the past three years and never disappointed!!
Ease of Use: 5
Effectiveness: 5
The chemical in the blue algae is great to use
The extra blue algae chemical was easy to use, and it cleared all the algae from my pool, and I followed the instructions through the letter and it was great. I have no problem with the algae in the pool after that.
Ease of Use: 5
Effectiveness: 5
Aglaecide that clears up water fast
This is one of my favorite products. I’ve used a couple different algaecides in the past, but the XtraBlue adds a little extra to the equation. I use this especially after a lot of rain when algae is more problematic.
Ease of Use: 5
Effectiveness: 5
Absolutely love this stuff!! Works great!
I love this stuff! Definitely kills algae and prevents it!I use it at startup of pool and add weekly. It works fast and kills the algae. I recommend this product if you are a pool owner. This is the only algaecide I buy!
Ease of Use: 5
Effectiveness: 5
Great product!
This product works like a charm! Our filter had to be replaced but none were in stock and the water turned green. We tried the Clorox Pool&Spa XtraBlue Algaecide and the water quality quickly returned to crystal blue normal. We’re sold on this product as it’s efficient, convenient and easy to use.
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Effectiveness:
Effective Algaecide
We’ve owned our pool for three seasons now. I have used other algaecide products once or twice out of convenience but have come back to Clorox asap. The packaging is good and easy to store. Instructions are good and it appears to work well, especially in the heat of the summer when the algae can get out of hand quickly.
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XtraBlue Algicide smooth use and guarantee results
Love the results this product provides. It is easy to use and provided you filter and balance the water correctly your results should be wonderful, You should be careful about splashing while you pour it is surprisingly easy
Ease of Use: 5
Effectiveness: 5
Keeping my pool algae free
I have a 16×10 above ground pool in central texas that we put up every summer. I have an algae bloom in the pool due to the excessive heat and me traveling. I was very happy when I followed the directions in the Clorox app and this Clorox Algaecide and it cleared up. Last year I struggled with a brand from the local pool supply house and had trouble balancing my pool. With the Clorox system (Clorox app to tell me how much algaecide to use) I am guided and find it easy to keep my pool clean and fun. Because it has been easy, I keep putting the pool up every summer, which is great with these 100 degree temps.
Ease of Use: 5
Effectiveness: 5
Cleared up algae
Used to clear up algae build up. Within couple of days of use and recommends dosage, pool cleared up. Directions were east to follow for recommended dosage. Will continue to utilize the Algaecide product.
Ease of Use: 5
Effectiveness: 5
Great product to control algae
Great product and easy to use. Been using for a while and no issues. Came well packaged. Instructions were easy to understand. Another great product from clorox pool. Definitely would recommend getting this
Ease of Use: 5
Effectiveness: 5
Amazing Product!!
This product is amazing! My 22,000 gallon pool was green (filled with algae) and cloudy. Forty eight to seventy two hours after adding this product to the pool, the water became blue and crystal clear.
Ease of Use: 5
Effectiveness: 5
Chlorinating Granules work excellent
Clorox Pool&Spa All-In-One XtraBlue Chlorinating Granules works great for me. It allows me to easily deploy chlorine and algae fighting additions together. The granules last for a long time without having to add again. I am very happy with this product.
Ease of Use: 5
Effectiveness: 5
Works fast and well
My pool was so green you could not see past about two feet and certainly could not see the bottom! After adding the Algaecide and XtraBlue Chlorinating Granules for a ‘Shock’ my water was clear! I failed to get a before image but you can clearly see the progression just from less than 24 hours (day 1) to the next day where it is perfectly clear water (just all the dirt on the bottom).
Ease of Use: 5
Effectiveness: 5
Great buy!
This product has maintained my pool from turning green from algae. I only had to use a half of the bottle. The weather has been up and down but the heat has remained constant even on cloudy days. Great product.
Ease of Use: 5
Effectiveness: 5
Ease of use and effectiveness
Ease of use and effectiveness are unbeatable , We use this as a preventative for our 8000 gallon above ground . A few oz’s a week and i am not ever scrubbing and saying bad words as the pool turns green.
Ease of Use: 5
Effectiveness: 5
Highly Effective Algaecide for a Sparkling Pool!
I recently purchased the Clorox Pool & Spa XtraBlue Algaecide, and I must say it has exceeded my expectations in every way. This product is an absolute game-changer when it comes to keeping my pool free from algae. Let me share my experience. First and foremost, the Clorox Pool & Spa XtraBlue Algaecide is incredibly effective. Within just a few days of using it, I noticed a significant reduction in algae growth. Not only did it eliminate the existing algae, but it also prevented new growth from occurring. My pool has never looked so clear and pristine! Another aspect that impressed me is the ease of use. The instructions provided were straightforward and easy to follow. I simply measured the required amount of algaecide based on the size of my pool, and then added it to the water. No complicated processes or excessive mixing required. The product quickly dissolves and disperses evenly throughout the water, ensuring maximum coverage and effectiveness. Furthermore, the Clorox Pool & Spa XtraBlue Algaecide does not negatively affect the pH levels or other chemical balances of my pool. This was a concern I had initially, but I’m glad to report that it seamlessly integrates into my existing pool maintenance routine without causing any disruptions. I also appreciate the long-lasting effects of this algaecide. With some products, algae seems to make a swift comeback after a short period. However, with the XtraBlue Algaecide, I have experienced prolonged protection against algae growth. It provides lasting results, which saves me both time and money in the long run. Last but not least, the Clorox brand itself is synonymous with quality and reliability. I have been using their products for various cleaning purposes, and this algaecide reinforces my trust in their brand. Knowing that I have a dependable and trusted solution to keep my pool algae-free gives me peace of mind. In conclusion, the Clorox Pool & Spa XtraBlue Algaecide deserves a resounding five-star rating. Its remarkable effectiveness, ease of use, compatibility with pool maintenance routines, long-lasting effects, and the trust associated with the Clorox brand make it an exceptional choice. If you’re looking for an algaecide that delivers on its promises, I highly recommend giving this product a try. You won’t be disappointed!
Ease of Use: 5
Effectiveness: 5
It is the cure
I was struggling with some algae growth that chlorine was not removing. Our water is alkaline and sometimes it is hard to balance the ph. I use as much ph down as anything else. Usually I send in the images of the test strips on the app and follow the recommendations. This year I tried the algae product and BAM over night all cleared and hasn’t been back.
Ease of Use: 5
Effectiveness: 5
Works as stated
This algecide has kept the algae levels in my pool in check. The water clouds upon pouring, spreads throughout the pool then clears upon filtering. The water also stays crisp and clear after use. Good to go.
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Get rid of Algae quick
I had let my pool slip a bit and algae started to build up. I used the Clorox Alagecide and it cleared it up very quickly. I now use as recommended as just part of the normal routine for my pool maintenance. Great product!
Ease of Use: 5
Effectiveness: 5
Works the first time
I love Clorox XtraBlue Algaecide. I always try to keep some on hand for when I have an algae isssue. It is super easy to treat the pool. It incorporates quickly in the water and begins getting rid of algae. It doesn’t damage my pool liner which is a big deal. I can usually see a huge difference by the next morning. I trust Clorox products and will continue to use for all of my pool needs. I also regularly recommend to friends and family.
Ease of Use: 5
Effectiveness: 5
Treats outbreaks and maintains a clear pool
XtraBlue Algaecide is a perfect solution for my pool to help treat algae outbreaks and then to keep the pool clean and clear. This product worked well for me to get rid of some stubborn green algae that I had. I followed the directions, which were accurate to eliminate my problem. Maintenance is just a few ounces a week and quick and easy to dose it. My pool has remained clean & clear since I started using this algaecide.
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No Algae Issues For Me
I have been using this product religiously since I have owned a pool. I use approximately 2 ounces of product weekly as a preventative measure. During our rainy season here in Florida I do bump up the dosage for heavy rainfall. This product has never failed to perform as stated. Never have to deal with any algae issues since I started using.
Ease of Use: 5
Effectiveness: 5
Clorox XtraBlue Algaecide
This stuff is the best! Since using Clorox XtraBlue Algaecide, my pool has been sparkling clear! I love this product and will never purchase another brand of Algaecide. Thanks Clorox for putting in the effort to create great products like this one!
Ease of Use: 5
Effectiveness: 5
works well
Just had a new pool installed and left it sit without chemicals for 2 days and it began getting slimy. dumped the recommended amount in and the next day the slime was gone! it was really that easy to use
Ease of Use: 5
Effectiveness: 5
Prevent algae from becoming a problem
I used the XtraBlue Algaecide as a preventative when I opened the pool to make sure that there wasn’t any hidden algae colonies. One dose and a thorough back flush and the pool is ready for another year.
Ease of Use: 5
Effectiveness: 5
This is our Go-to Algacide!
We just opened our pool and needed to apply a good algaecide to get sparkling water. One of the main benefits of this products is it kills ALL types of pool algae from the green to the mustard to the black. No need to buy several different products. The product does not foam when you put it in the water and it does not stain our vinyl liner. This product also works really quickly and the instructions are super easy to follow. No guesswork. We plan to continue using this product weekly as a maintenance step in our pool care. As you can see, I love this product for many reasons. I am definitely recommending this product to everyone.
Ease of Use: 5
Effectiveness: 5
Great Algaecide
Best Algaecide out there. Got a bloom and this will kill it in its tracks. Use a little for maintenance or more if you have an outbreak. Kept my pool clear and free from outbreaks the entire swim season.
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Easy maintenance
I’ve used this product as preventative maintenance for keeping away algae. I sometimes get lazy about adding in the chlorine and don’t want a disaster on my hands. It’s easy to use and was shipped in a plastic bag so it didn’t make a mess in the box.
Ease of Use: 5
Effectiveness: 5
CloroxXTraBlueAlgaecide Fan
Recommend! Easy, fast and effective. Use with Clorox Pool water test strips and Clorox Pool app. Convenient, Maintains test records in same on-line account. Tracks supplies, prompts orders as needed.👍🏽
Ease of Use: 5
Effectiveness: 5
New product for me and I think I’m hooked! I’ll ne
I’ve never used an algicide before, so this is a first for me. I really wasn’t sure what to expect. For the most part, my pool doesn’t experience much in the way of algae but right after I received this product, it bloomed algae suddenly. I checked the water put everything in two balance, and added the algicide and it’s definitely an improvement over, not using the algicide at all
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Algae issues
We had quite a bit of rain and my pools chemistry had been thrown off. This product definitely helped out the pools algae issue. After getting the pools chemistry back on track and adding some of this product I noticed a big difference in about a day.
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XtraBlue Algaecide
The product worked very well to get rid of green algae. I ran the pump as directed brushed the sides and bottom but for some reason still have some small pieces of black algae clinging to the bottom. I will continue to use it as directed and may have to leave another review.
Ease of Use: 5
Effectiveness: 4
Algaecide that works quickly and effectively!
Great way to get a sparkling pool with little effort! After a winterized pool, water was in need of a good algaecide and this product made for a quick and effortless, adding this product as a starter or maintenance is a great choice!
Ease of Use: 5
Effectiveness: 5
Go get XtraBlue Algaecide and do your pool a favor
After brushing pool floor and wall, lots of algae came off! Vacuumed and balanced the pool then put in XtraBlue Algaecide. All crystal clear now and has been that way for a week after opening our pool. Amazing product!
Ease of Use: 5
Effectiveness: 5
Simple to use, quick and effective
First time using it when I saw a little green in my above-ground pool. Within an hour, all the green pool algae disappeared. Was amazed at the product and quickness of it getting to work. With easy instructions to follow, it does what it says it will do. Clean the pool!
Ease of Use: 5
Effectiveness: 5
Algaecide Review
received the sample several weeks ago and decided to try it last week after significant rain event. Seems to work as intended…………………………………………………………………………………………………………………………………………………………………………………………………………………..
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Love it!
This stuff works really really well. It killed the algae that was covering my pool after winter. I will regularly use this as maintenance to keep algae at bay. This is effective and works amazingly well.
Ease of Use: 5
Effectiveness: 5
Love it
I love how easy this algaecide is applied and it works quickly and keeps algae from coming back. I always keep a bottle of Xtra Blue Algacide on hand and it has always been effective for a slight problem or big one.
Ease of Use: 5
Effectiveness: 5
bigger and still good
Seems like just a larger bottle of the regular algicide as the active ingredients and percentages are the same but that’s ok because I’ve been using the regular version and this works just as well as the regular did which is very well.
Ease of Use: 5
Effectiveness: 5
Prefect algaecide! Work as Advertised
Had a bit of yellow mustard algae, this took care of in less than 12 hours. Only needed one treatment. Incredible product. I will certainly keep this product in my arsenal. I can not recommend this product enough.
Ease of Use: 5
Effectiveness: 5
XtraBlue Algicide, great weekly maintenance
Very easy to use. Very simple to read the ingredients, and to be able to apply the product. Works Great, I would highly recommend this because it does what it is suppose to do and was very easy to use.
Ease of Use: 5
Effectiveness: 5
Quick algea knock out
Absolutely amazing product. My pool water was totally green, I couldn’t even see thru it. I used shock and the clorox algea liquid per the directions and let my filter run over night and now my pool water is crystal clear!!!
Ease of Use: 5
Effectiveness: 5
Algaecide
I’ve been using this product in my home pool for a few years. Very easy to use and seems to keep the algae down as long as I have the proper test readings for my water. Living in Texas the algae can be a battle in the hot months.
Ease of Use: 5
Effectiveness: 5
It actually works! Green to blue
First off, with any algaecide, make sure to shock and balance your pool before application. I’ve tried many algaecides in the past which made little difference. With the Clorox algaecide, I followed the application instructions to tackle an algae problem in my pool. Within a week, all the algae had died and after I vacuum, my pool was looking crystal clear again.
Ease of Use: 5
Effectiveness: 5
Does the Job
Exactly what it says. 20000 gal pool greenish and cloudy. Next day blue and clear and waiting for Polaris to pick up residues but not even 24 hrs gone by which is what is says it takes
Ease of Use: 5
Effectiveness: 5
How to get rid of algae in your pool
There is an easier way to get rid of algae in your pool. Get a phosphate remover. I struggled with algaecides and kept getting algae back. Phosphate remover gets rid of algae and IT DOES’NT COME BACK!!!!
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Stained my white pool finish blue
I’m so disappointed. While this did a good job of getting rid of algae, I had no idea it would stain my BRAND NEW white pebblestone finish blue!! I’m sick about it.
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Ease of Use: 5
Effectiveness: 5
Works Awesome
When we needed to it, there was No hassle, worked Great!
Ease of Use: 5
Effectiveness: 5
Algaecide
The product does what it is supposed to do. I had already used another product to open the pool but used this for the weekly maintenance. I only wish it had the ounces marked on the side of the bottle to make measuring easier like other brands do.
Ease of Use: 3
Effectiveness: 3
Fantastic Product!
It made opening the pool this year a breeze. great product and I highly recommend it!
Ease of Use: 5
Effectiveness: 5
Works quickly…
Went out of town and forgot to add chlorine before we left, when we got back we had several algae spots, we used this product along with chlorine and it was sparkling clean again in no time!
Ease of Use: 5
Effectiveness: 5
Incredible product!
Great product, works fast, easy to use. This brand always has reliable results.
Ease of Use: 5
Effectiveness: 5
Treat Before You Turn on Your Solar
I took the preventative route this year, instead of the reactive. Here in the desert when I make the move to turn on my solar heater, the algae just seems to be waiting to bloom. This year I treated the pool with the XtraBlue Algaecide before hand and haven’t seen one bit of algae. Just like the saying goes. Any ounce of prevention is worth a pound of cure!
Ease of Use: 5
Effectiveness: 5
Ease of Use: 5
Effectiveness: 5
Great product!
Clorox XtraBlue algaecide is easy to use and helps keep my pool clear and algae free.
Ease of Use: 5
Effectiveness: 5
Keeps Agae at bay
keeps my pool clear and algae free, easy to use, follow directions
Ease of Use: 5
Effectiveness: 5
Works fast
Had some algae bloom. I put this in a it took care of it fast.
Ease of Use: 5
Effectiveness: 5
Great for Maintenance
This product works well in maintaining a pool that is free of algae. It is easy to use and gives good results.
Ease of Use: 5
Effectiveness: 5
Great product
Pool was slightly tinted and one we used the product everything looked better in about 24 hours
Ease of Use: 5
Effectiveness: 5
Received at just the right time
I received this product at just the right time as I was opening my pool. I used it per the directions to prevent algae build-up. I can’t comment on the results yet – it’s too soon to tell, but I’m sure it works as stated because it’s Clorox.
Ease of Use: 4
Effectiveness: 4
Did exactly what it was made for!
I finally got my pool up and running but the water was pretty dirty with a lot of algae. I received XtraBlue Algaecide and decided to see if it would work. It does a really great job! It made my life a lot easier than having to continue vacuuming the pool. I followed the directions and within a couple hours, my pool was clear again. Very happy with this product.
Ease of Use: 5
Effectiveness: 5
Excellent Product
This product does what it supposed to do. Algae is gone very quickly and helps maintain as well.
Ease of Use: 5
Effectiveness: 5
First pick products!
The whole clorox line of pool products are work so well. They are the first products we reach for whether we have a problem or are just trying to keep our pool beautiful. They make it effortless!
Ease of Use: 5
Effectiveness: 5
Excellent Product
This is an effective product when used as directed.
Ease of Use: 5
Effectiveness: 5
Works great
Dump it in and the next day you have a new pool! Go from green to clear overnight. Clorox knows how to kill algae quickly
Ease of Use: 5
Effectiveness: 5
works great
This gets rid of algae quick. It works and keeps my pool free of algae.
Ease of Use: 5
Effectiveness: 5
Failed miserably
Followed label instructions, placed product in my perfectly clear water fall in lieu of my normal bromine tablet regimen, had algae in a weeks time.
Ease of Use: 5
Effectiveness: 1
Good product!
Good product for maintenance. Be mindful that too much copper can cause problems if your other chemicals are off balance.
Ease of Use: 5
Effectiveness: 4
Great product.
I used this product in my Hot Tub. It cleared the water by the next day and gave the water a very nice blue appealing tint.
Ease of Use: 5
Effectiveness: 5
This really is a fantastic product.
No pool owner should be without this product, There is no other like it.
Ease of Use: 5
Effectiveness: 5
Excellent Product
Always reliable product, much need to manage Algaecide buildup
Ease of Use: 5
Effectiveness: 5
This product is GREAT!!!!!!
Get rid of everything XtraBlue Algaecide. I have never seen something work so well. I top off each week!
Ease of Use: 5
Effectiveness: 5
works well!
this stuff always makes the water extra blue! no pool should be without it!
Ease of Use: 5
Effectiveness: 5
Great product
At certain times I need this product. I’m glad to have it on hand because it works.
Ease of Use: 5
Effectiveness: 5
Awesome!
I tried other products to eliminate mustard algae and nothing worked. This product along with the shock worked in 24 hours. Thank you!
Ease of Use: 5
Effectiveness: 5
The best!
Eliminates and prevents algae better than any other product I’ve tried
Ease of Use: 5
Effectiveness: 5
Best on the market
Used this product for years and not yet has it let me down. My water is always crystal clear
Ease of Use: 5
Effectiveness: 5
easy to use
has kept my pool sparkling! easy to use! can’t wait to have a clear pool all summer!!!
Ease of Use: 5
Effectiveness: 5
Fantastic
Definitely controlled algae with a small amount! Money saver!
Ease of Use: 5
Effectiveness: 5
Fast acting!!
Fantastic product that works quickly to eliminate algae!!
Ease of Use: 5
Effectiveness: 5
Great product
Did exactly as it should deliver was fast on time Delivery
Ease of Use: 5
Effectiveness: 5
Excellent Product
Haven’t opened the pool in KY yet. Still too cool. But we do like the algacide product to clear up the pool fast and effectively.
Ease of Use: 5
Effectiveness: 5
Love this Algaecide
Living in the Florida heat and rain I could (and have) battled algae all summer long. This product tackles the problem. I don’t have to buy a lot of different products. This product does it all.
Ease of Use: 5
Effectiveness: 5
Best Algicide Made
Destroys algicide and makes the water crystal in almost overnight. I live it the deep south we’re it is hot and humid, adding clorox extra blue to my above ground pool prior to leaving for a week or more and leaving the pump and filter off, keeps my pool crystal clear for my return.
Ease of Use: 5
Effectiveness: 5
works great
Excellent product for removing algae.Easy to use and very effective
Ease of Use: 5
Effectiveness: 5
Algae Out!
Haven’t needed this yet, but have used it in the past with good results.
Ease of Use: 5
Effectiveness: 5
Great product!
Cleared up my pool just in time for swim season. We are ready for pool fun
Ease of Use: 5
Effectiveness: 5
Fantastic Solution for Algae Outbreaks!
Here in North Texas, the hot summer sun can warm pools to the point of algae bloom. When that happens, one dose of this XtraBlue Algaecide is all you need to have clear, blue water once again! Think of it as a mega-shock. You just loosen all the algae from around the walls of the pool with a coarse brush and then treat with this wondrous product, and your problem is solved very quickly.
Ease of Use: 5
Effectiveness: 5
Great Product
Worked great in our pool. Have used multiple times and always works great.
Ease of Use: 5
Effectiveness: 5