CLOROX Pool&Spa 12105CLX pH Down, 5 lb

5 Stars — Effective and Easy-to-Use Pool pH ReducerThis Clorox Pool&Spa pH Down worked exactly as expected and helped bring my pool water back into balance quickly. My pH had drifted higher than recommended, and after following the dosage instructions, I noticed improvement within a short amount of time. The water looked clearer, and it felt much more comfortable for swimming afterward.The granules dissolved well when added properly, and the packaging was sturdy and easy to reseal between uses. I also appreciate that the instructions on the bag are straightforward and easy to understand, even for routine maintenance.One thing I liked is that it allowed me to make gradual adjustments without overcorrecting the water chemistry. After testing again later, the pH levels stayed in a much better range, which also helped the chlorine work more effectively.Overall, this has been a dependable pool maintenance product from a brand I trust. It’s easy to use, effective, and a useful item to keep on hand during pool season.

This stuff works great! Went from 8.3ph to 7.7ph in a matter of days. Depending on the size of your pool, you may need more of it than you think. I initially put one bag in over 24 hours in an 18,000 gallon salt pool and needed half of another bag to get it the proper level. I think adding a cup or so each week will prevent the pH from spiking.

Did the job. Good price

Lowers Ph, but corrodes metal parts in above ground salt water pools and the chlorinator plates. A lot easier and safer to use than muriatic acid but it comes with the downside of corrosion.

The current price is affordable comparable at this price to Liquid acid. My Ph was at or even above 8 and my TA was 140 too. I know even if I bring down the PH I need to get the TA down too (be sure your CYA is no more than 60 ppm or you need to bring it down because it interferes with the testing on TA (higher than it really is per Taylor Technologies), so remove some water and refill if you have to. This is why I use Liquid Chlorine instead of tabs because even if you started the pool with 30-50 CYA as recommened, each tab will add 6ppm CYA too and that adds up quickly causing you to go through higher amounts of Chlorine to do the job. But PH is extremely important on how much effectiveness you get out of your FC, so first PH and then address the chlorine. I have a 10,000 gal play pool and I can't keep FC in the pool, but the first thing I am getting under control is the PH which can be done in 1-2 days with this product. 7 oz of dry acid is suppose to be equal to 1 cup liquid acid. At frst the PH was stubborn to come down the first tretment of 3 cups Chlorox PH down, but each subsequent treatment of 2 cups taking about 5 treatments in 2 half days. It went like this; started at 8 ppm with 3 cups and after was still 8ppm, next treatment started at 8, came down to 7.8 over night it went back to 8, next treatment start at 8 and dropped to 7.6, I didn't stop there because my TA will 100 and my experience tells me it won't hold so I did nothr treatment right away with 22 more cups and wallah ph is 7.2 and TA is now 80 which I'm hoping is low enough to stablize the PN from constantly rising. If not I will treat again (no lower than 7.2 and test TA again and see if 60 is the sweet spot. I have added non chlorine shock and alage 60 too to control any algae blooms and some chlorine too at night only. This has taken two and one half 5 lb bags of Chlorex PH down 93% to accomplish this. I am determined and hope Chlorox doesn't increase their price or I willhave to look at other options. I can't use and won't use muriatic acid.