Clears Algae in 24 Hours
Fast-acting treatment kills all types of pool algae.
Prevent & Treat
Preventative, non-foaming formula fights algae growth before it starts.
Salt Pool Compatible
Patented, non-staining formula is suitable for all pool types, including salt pools.
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!
Product reviews
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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!!!!
Ease of Use:
Effectiveness:
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.
Ease of Use:
Effectiveness:
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
Water is Chrystal Clear
Applied this product a few days ago. Water is clear blue. We have some spots on the liner that we hope also will clear up.
Ease of Use: 5
Effectiveness: 4
Works awesome
Great product that keeps working again and again never have to worry about wasting my money on Clorox products because they work
Ease of Use: 5
Effectiveness: 5
Easy to use and effective
I have been using this product for a while now, both for when algae becomes noticeable and also as a preventative. Provides a noticeable difference right away and helps keep my pool looking great.
Ease of Use: 5
Effectiveness: 5
Terrific product!!!
Works great!! Used to start the pool this year and get rid of the algae. Man did it ever. Works great!!! Made my life easier setting up this year!!
Ease of Use: 5
Effectiveness: 5
Fantastic Product
Clorox algaecide is the best one to keep your pool clean and also to get it from green to clean!
Ease of Use: 5
Effectiveness: 5
