Horticulture Source Cultilene Rockwool Blocks-6 x 6 x 4 in. (case of 64 pieces) dl-CUL664
4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart
General Hydroponics CALiMAGic 1-0-0, Concentrated Blend of Calcium & Magnesium, Prevents Secondary Nutrient Deficiencies, Helps Prevent Blossom End Rot & Tip Burn, Clean, Soluble, & Will Not Clog, 6-Gallon
Cultilene Rockwool Blocks-6 x 6 x 4 in. (case of 64 pieces) dl-CUL664
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