Robelle 6-Pounds Premium pH Down for Pools, Concentrated Sodium Bisulfate, Made in USA

This pool solution came packaged well as to not break open in transit. The bag is nice and sturdy featuring a handle for easy storing and lifting. The solution itself worked fast. My pool chemicals read better now and I’ll keep buying them. It’s priced reasonably!

good amount for the price, i like buying from here due to the fact it comes in overnight, good volume, and dont have to leave the house. did well on my above ground pool.

Lowers Ph successfully in pool without the creepy feelings of using liquid acid. Don’t know which is less expensive yet because it will depend on how much of this product is needed to be effective compared to liquid acid. This is a possible alternative for anyone creeped out from using liquid. However, careful read the directions on proper use to be sure you are using this in the right way

Only thing that worked was actual liquid muriatic acid. I doubt ill piddle with granulated ph reducers in the future. The liquid acid works better, faster.

Purchased for our pool and it does a great job of balancing our PH level. Will buy again.

I use this all the time to help get the perfect balance in my above ground pool

I have tried multiple brands and products. Acid from the big box stores, big brand ph lowering products - this is the FIRST one to work quickly and with relatively little product. We have a new plaster lining so we were told ph will be higher for a while. Very true! Always high. Until now.I only wish I bought more. Will be ordering again.

Ok