Mycostop Biofungicide 5 Gram Mycostop Wettable Powder is ideal for hydroponic growing environments, will not clog pumps or sprayers Apply as a soil drench, foliar spray or with hydroponics Makes up to 500 gallons of solution for use on all crops such as vegetables, herbs, ornamentals; Colorado MMED approved for use in medicinal gardens Control or suppression of many root rot and wilt pathogenic fungi, including Pythium, Fusarium, Alternaria, Phomopsis, Rhizoctonia, Phytophthora, and Botrytis Organic & safe to apply, OMRI listed since 1988