GS Plant Foods Cal-Mag 420 Dry Super Concentrate, Makes 420 Gallons of Nutrient Solution, 18 Ounces, Calcium/Magnesium FertilizerBrand: GS Plant Foods Features: Completely water soluble powder that makes 420 gallons of nutrient solution per container. Plants require both primary nutrients and secondary nutrients. Cal Mag 420 is packed with secondary nutrients, it contains Calcium 13%, Sulfur 4% and Magnesium 3%. Beneficial to plants throughout all growth cycles and easily mixes with water to use during irrigation or as a foliar spray. Easy To Use, perfect for all stages of
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GS Plant Foods Cal-Mag 420 Dry Super Concentrate, Makes 420 Gallons of Nutrient Solution, 18 Ounces, Calcium/Magnesium Fertilizer