View cart “PH Minus” has been added to your cart. 3″ Tabs$60.50 All our chlorine tabs are pro-grade quality to control all types of pool algae, bacteria, germs, and parasites for cleaner, healthier water. Proper chlorine levels are between 1.0 and 3.0 ppm. 3" Tabs quantity Add to cart Category: Pool Chemicals Related products Add to cart Calcium $8.75 Add to cart Stabilizer $8.50 Add to cart PH Plus $3.75 Add to cart PH Minus $4.00