Clorox® Pool&Spa™ XtraBlue Swimming Pool Algaecide, All-in-One Algae Killer, Non-Foaming, 40 Ounce (Pack of 1)

4.6 4.6 out of 5 stars | 2,172 ratings

Price: 25.9

Last update: 07-19-2024


About this item

All-in-one algae Killer
Quick and effectively kills Green, mustard and Black pool algae
Treats up to 25, 000 gallons
Non-staining, non-foaming formula

Product information


Top reviews from the United States

DeAnn Royster
5.0 out of 5 stars Clear Water
Reviewed in the United States on June 9, 2024
Bought this product to clear up some algae on the pool. Worked well and quickly.
Amazon Customer
5.0 out of 5 stars Amazing Product Simple to Use
Reviewed in the United States on September 10, 2023
simple to use product that clears algae and keeps your pool sparkling clear. this product is the BEST. with record heat this summer this product will get rid of your. algae and keep your pool looking great. Don't spend a bunch of money on different algaecide products to get rid of any algae you may have. this one product will take care of it. use initial dose and then around 8 to 10 ozs. weekly and your pool will always look great and you'll be saving money in the long run. I tried so many different products and a ton of money and nothing worked as good as this product. this is the best pool item you can purchase to keep your pool looking great with no odor. have been using for the past 2 years and very well worth the money spent. you will save in the long run using this product plus it is the best out there.
HS
5.0 out of 5 stars Works if pool is balanced
Reviewed in the United States on July 16, 2024
I mainly use this product with my weekly maintenance routine. It works great in keeping algae from forming. The recommended amount is only 1.5 fl oz per 10k gallons. If your pool is well maintained, this can go along way.

If you’re having algae problems, this will help, but as specified in the directions, it’s important to have the other chemicals balanced to get the most out of this product, especially PH and chlorine. It’s also important to understand that using this and shock at the same time renders both of them useless.

I recommend going to a local pool store and getting the water digitally tested. This will help get everything balanced and the water clear again. I would not simply expect clear water in 8hrs, as advertised. If there are other underlying issues, this could take several treatments and other chemicals, or there could issues with your filters.
Customer image
HS
5.0 out of 5 stars Works if pool is balanced
Reviewed in the United States on July 16, 2024
I mainly use this product with my weekly maintenance routine. It works great in keeping algae from forming. The recommended amount is only 1.5 fl oz per 10k gallons. If your pool is well maintained, this can go along way.

If you’re having algae problems, this will help, but as specified in the directions, it’s important to have the other chemicals balanced to get the most out of this product, especially PH and chlorine. It’s also important to understand that using this and shock at the same time renders both of them useless.

I recommend going to a local pool store and getting the water digitally tested. This will help get everything balanced and the water clear again. I would not simply expect clear water in 8hrs, as advertised. If there are other underlying issues, this could take several treatments and other chemicals, or there could issues with your filters.
Images in this review
Customer image Customer image
tln
5.0 out of 5 stars Works great!
Reviewed in the United States on June 28, 2023
I had no idea what type of algae was plaguing my pool, so I bought this because it kills 3 types. My pool is roughly 28,000 gallons and I only used 1 bottle to treat it. Within 10 minutes the algae was gone! 24 hours after application and my pool is back to it’s sparkling clean self! Followed directions exactly as written. I will be using this next spring when we open it up!
mzelly
4.0 out of 5 stars It works!
Reviewed in the United States on June 18, 2023
first time experiencing black algae this year and this product wiped it out in one treatment
John
5.0 out of 5 stars So very thankful I tried this product!!
Reviewed in the United States on September 7, 2023
I used another product from HTH for the last couple of years and always had problems with algae growing on the bottom and walls of the pool despite constant vacuuming and shocking. When I ran out this year, I decided to try something different. This stuff is an absolute god-send and so much better than the HTH algaecide. I add a 2 ounce maintenance dose once each weekend and the water stays crystal clear without any algae build up at all. So very happy I switched!! Life is soooo much easier and enjoyable this summer!!
Rocco Marrandino
5.0 out of 5 stars Wow!!! This stuff worked great!
Reviewed in the United States on July 26, 2023
I was having problems keeping algae out of my pool for the past few weeks. I tried everything that I knew to do.

I finally decided to try an algaecide and took a chance on this one. Dumped 1/2 bottle in late afternoon/early evening and left the pump running all night. I was totally shocked when my pool was crystal clear the next morning. It's now a couple of days later and everything is still great.

Can't recommend this product enough.
David N.
5.0 out of 5 stars Life Saver
Reviewed in the United States on September 6, 2023
I was at my wits end trying to remove the yellow algae from my pool. I had tried other algaecides but none did the trick. This Clorox algaecide came to the rescue and removed all of the yellow algae and a little green algae in some of the cracks. Now, my pool walls look back to normal. Buy this brand and this bottle, it saved me from further headaches and from calling a "pool pro".

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