6 lbs pH Minus
Product Overview
What pool techs reach for when high pH threatens sanitizer efficiency and equipment life.
Formulated with 93.2% Sodium bisulfate, this Regal pH Minus 6 lbs container reliably lowers elevated water pH down into the ideal 7.2–7.6 range. It delivers the corrective power of dry acid without the harsh fuming and spill risks of liquid muriatic acid, protecting pool plaster and heaters from scale formation.
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Benefits & What Makes It Different
93.2% Sodium bisulfate
Provides concentrated dry acid strength to steadily lower pH and reduce total alkalinity into the standard 80–120 ppm target.
Convenient 6 LBS Size
Supplied in a rigid 6 LBS container that allows precise measuring and safe storage without corrosive liquid off-gassing.
Restores Sanitizer Power
Keeps free chlorine performing at peak efficiency in the 1–3 ppm range by preventing high pH from deactivating hypochlorous acid.
Product Details
Sodium bisulfate 93.2%
1 lb per 10,000 gal lowers pH by ~0.2–0.4
Compatibility
- Never pre-mix dry acid directly with chlorine products or other pool chemicals.
- Compatible with all pool sanitizing systems including salt, ozone, UV, and standard chlorine.
When To Use This
Pro Tip
In hard water regions where calcium hardness frequently exceeds 400 ppm, pH tends to creep up quickly; pre-dissolve granular dry acid in a bucket of water before pouring to avoid etching plaster or leaving localized residue.
Common Questions & Instructions
How much Regal 6 lbs pH Minus should I add to my pool?
A standard baseline dosage is roughly 1 lb of dry acid per 10,000 gallons of pool water to lower pH by approximately 0.2 to 0.4. Always test to ensure total alkalinity is within 80–120 ppm before making major adjustments.
Does Sodium bisulfate lower total alkalinity as well as pH?
Yes, Sodium bisulfate at 93.2% concentration lowers both pH and total alkalinity. If alkalinity is already balanced, add the product in small split doses around the pool perimeter.
How soon can I swim after adding pH Minus?
Allow the pool pump to circulate for at least 30 to 60 minutes after broadcasting dry acid, and retest to confirm pH is within 7.2–7.6 and free chlorine is 1–3 ppm before swimming.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
