Click to expand Tap to zoom General Hydroponics pH Down Liquid Save Liquid error (product-badge line 32): Computation results to '-Infinity'% $12.00 Quart - $12.00 Gallon - $29.24 Quart Gallon Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.
