Masterblend 4-18-38 fertilizer

Masterblend 4-18-38 Hydroponics Fertilizer 1LB Simply the best nutrient formula available for growing tomatoes and vegetables in a hydroponics system. The recipe for use in a hydroponic system is 12 grams Masterblend per 5 Gallons of water. 1 pound contains enough nutrients for approx. 200 gallons of water. For example, if you have a 15 gallon reservoir, you could replace the nutrients every 2 weeks for six months!!