Continue shopping “ORIGINAL PoolRx 20K-30K Pools Black Mineral Unit – 4 Pack” has been added to your cart. Product Price Quantity Total × ORIGINAL PoolRx 20K-30K Pools Black Mineral Unit - 4 Pack $274.57 ORIGINAL PoolRx 20K-30K Pools Black Mineral Unit - 4 Pack quantity $274.57 Cart totals Subtotal $274.57 Shipping Shipping costs will be calculated once you have provided your address. Total $274.57 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update