Surface Protection

Prevents equipment corrosion, and surface stains and scale.


Long-Lasting Sunlight Protection

Enriched with a chlorine stabilizer to extend the life of your clean.

Algaecide for Swimming Pools

Stops Algae

Kills and prevents green, mustard and black pool algae

Product reviews

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Obviously failing

Really? Do I have to teach you that people who buy your pool chlorinating tablets will most likely keep them by the pool? Most pools are outside. Well CLOROX, guess what happens outside? RAIN. SO WHY IS THE PLASTIC CONTAINER WITH A HARD TO OPEN LID NOT…. waterproof? Now I have a $120+ container of noxious half dissolved tabs in water that almost made me pass out when I opened it. Hire a professional that can source a waterproof container for you. And send me a replacement as my fee for teaching you something so simple. Mic drop
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Hard to get top off and too large of container.

First of all the container is too hard to open. I absolutely could not get it open and it took a while for the husband to get it open. For elderly people I would not recommend purchasing because you may not be able to open. The 5lb container only has 10 tables yet the plastic container can hold more that twice that amount. What a waste of plastic!
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Raises CYA

As other reviews mentioned, this product raises CYA and QUICK. I was using this along with the CLOROX 6 in 1 shock. Both products utilize trichlor, which raises CYA levels. I have a brand new pool, with a cartridge filter and do a lot of maintenance to keep the pool clean. The issue is within a year of using these products (even less for the CLOROX shock, as I was using a different brand before) my CYA is now out of range (about 110 ppm). I will be switching to liquid chlorine and draining/replacing my water slowly as it is summer now. This is not ideal as I am in California and we are in a drought. The products seem to sanitize fine, but not for long once your CYA levels build up and you have to drain your pool.
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5 Lb. Bucket Does NOT Weigh 5 Lbs!

I purchased the 5 lb. bucket at Walmart and it only had 9 tablets in it!! I have accurate postal scales and the entire bucket only weighed 4 lbs. 5 ounces! The package clearly says it is a Net Weight of 5 Lbs.! What a ripoff.
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Do Not Buy

This product will cause your pool to not hold chlorine. It contains Copper and will throw your TDS solids off. This is thee worst product you can put in your pool
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Impossible to open lid.

I’ve tried for a half hour, and even with a screwdriver can’t open the container.
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Works well to a point

Simple system using Clorox pool system. Worked well for two years and then the free chlorine dropped soon after adding chlorine, even though total chlorine was through the roof. Problem was chlorine lock caused by accumulating cyanuric acid levels that were over 200. In Southern California, there are restrictions on excess water use, and the solution is the empty the pool which can’t be done. Chloride should also make tablets and shock without cyanuric acid.
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Chlorine level 0 in the highest setting

We bought the tablets in Costco. Used to have our setting on 3, and the chorine levels were a little too high, so we would always keep the setting at 2. Now, with these newly bought XtraBlue tablets the tests show levels between 0 and 1. We changed the setting to 6 (which is maximum setting on our equipment), wouldn’t change the tests results. So bummed! Just bought a whole new box of it!
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