
Quick overview
- 93.2 percent sodium bisulfate Dry acid in granular form, the standard way to bring pool pH down.
- Lowers pH slowly and effectively Works gradually rather than crashing the pH, which makes it easier to land on target.
- Easier to handle than liquid acid Granules pour and measure without the fumes and splash risk of muriatic acid.
- Helps the sanitizer work Chlorine loses effectiveness at high pH, so correcting pH restores the sanitizer you are already paying for.
- Helps prevent scale Keeping pH in range reduces mineral scale forming on surfaces and equipment.
- 2.5 lb bottle A bottle size that suits routine correction on a residential pool.
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Product details
Pool Season pH Down is a granular dry acid in a 2.5 lb bottle, made up of 93.2 percent sodium bisulfate. It lowers the pH of pool water slowly and effectively.
Why pH matters
pH sets how well everything else in the pool works. When it drifts high, chlorine becomes far less effective at the same measured level, so the water tests fine on paper and still goes dull or green. High pH also pushes minerals out of solution, which is how scale gets onto plaster, heater tubes and filter elements.
Dry acid versus liquid
Sodium bisulfate does the same job as a liquid acid without the fumes, the splash risk and the awkward jug. It is the product of choice for lowering pH on most residential pools for exactly that reason.
Using it
Add in stages against the dose on the label rather than all at once, run the pump to circulate, and retest before you add more. It is far easier to take pH down in steps than to bring it back up after overshooting.
| Brand | Pool Season |
|---|---|
| Manufacturer part number | 47251440 |
| UPC | 035186207745 |
| Type | pH decreaser, dry acid |
| Active ingredient | 93.2 percent sodium bisulfate |
| Form | Granular |
| Size | 2.5 lb |
| Container | Bottle |
| Shipping weight | 3 lb |
| Ships | Parcel |
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