Home / Chemicals / Bioguard Lo-n-Slo Granular pH Decreaser Bioguard Lo-n-Slo Granular pH Decreaser Reduces pH and total alkalinity in pool and spa water. Easier and safer to use and store than Hydrochloric Acid Category: Chemicals Tag: Bioguard Spread the love Related products Bioguard Super Soluble Chlorine Granules 2.25kg Read more Bioguard Lite Multi-Purpose Shock Read more Bioguard Pool-Magnet Metal Stain Preventor Read more Bioguard Off-The-Wall Surface Cleaner Read more