Hydropro Liquid Fertilizer 19-19-19 Professional Quality Multipurpose Fertilzer With Chelated Minor Elements Odorless, Professional Grower Formula with Low Salts 32 Ounces / One Quart Use for Hydroponic systems, nursery plants, greenhouse, flowering & foliage plants, turf and landscape plantings, vegatables, fruits and berries, and more. This is a Great Fertilizer used by Leading Growers! Free Shipping!! Mixes easily with water. This quart will make up to 48 gallons of finished constant feed fertilizer.