HomeDry fertilizerGrow More 20-10-20 Soiless-STD Grow More 20-10-20 Soiless-STD Category: Dry fertilizer Product ID: 22862 Description Description Dry Package Size: 25 Lb Related products Ammonium Sulfate 21-0-0 Calcium Nitrate SG 15.5-0-0 Grow More 20-8-20 pH Down Grow More 16-3-16 w/Cal-Mag