General Hydroponics Dry KoolBloom, 16 lb.KoolBloom is a highly concentrated nutrient supplement that promotes abundant flowering and facilitates ripening in annual flowers and herbs! KoolBloom is rich with phosphorus and potassium and contains precise amounts of ripening elements. KoolBloom is to be used only at the very end of a plant's life cycle and will help build larger, heavier fruits and flowers. Dry KoolBloom is packed with the potency your plants prefer in the final stages of