Urban Farm Fertilizers Garden of Eden Hydroponic Nutrient, 1 Gallon High-performance, micro-brewed bloom fertilizer for indoor hydroponics. 3.6-6.0-3.8 NPK. Super-concentrated: 256:1 @ 2.4 ms/cm EC, or 1200ppm 100% complete, 100% water soluble, precision formulated and blended. Made from organic components, mycorrhizae, humic acid, kelp, enzymes, and minerals. Calcium rich: proprietary blending technology allows up to 4%.