Continue shopping “ORIGINAL PoolRx Black Booster Mineral Unit 20K – 30K gallons – 4 Pack” has been added to your cart. Product Price Quantity Total × ORIGINAL PoolRx Black Booster Mineral Unit 20K – 30K gallons - 4 Pack $154.96 ORIGINAL PoolRx Black Booster Mineral Unit 20K – 30K gallons - 4 Pack quantity $154.96 Cart totals Subtotal $154.96 Total $154.96 Proceed to checkout — OR — Coupon: