MasterBlend 4-18-38Official MasterBlend 4-18-38 FertilizerExperience the incredible growth with the official MasterBlend Fertilizer ! MasterBlend 4-18-38 Fertilizer MasterBlend 4-18-38 (Official Distributor)Direct from MasterBlend Fertilizer – for Tomatoes and VegetablesEasy to use – highly concentrated!Master Blend fertilizer is perfect for Hydroponics and Soil gardensChoose 1, 5, or 25 Pound Quantities1 & 5 pound bags are packed in clear bags with official labelingMasterBlend fertilizers have been the go-to Hydroponic and Garden fertilizers for commercial gardeners for a long time. Their 4-18-38 Tomato and Vegetable Fertilizer provides proven results time after time. Because of the unique composition, it is recommended to use the 4-18-38 together with Magnesium Sulfate (Epsom Salt) and Calcium Nitrate for the ultimate balanced water soluble fertilizer.MasterBlend 4-18-38 is Water SolubleDirect from MasterBlend – Fertilizer for Tomatoes and VegetablesHighly concentrated!Master Blend fertilizer is perfect for Hydroponics and Soil gardensIt is recommended to use MasterBlend 4-18-38 in conjunction with Calcium Nitrate and Magnesium Sulfate (also available) in the following recipes…**IMPORTANT! Do not mix the 3 components together! Doing so will cause nutrient lockout and all the nutrients will not be available to your plants. You can mix the MasterBlend and Epsom Salts together, but not the Calcium Nitrate! Ideally you should mix each component separately in your water until thoroughly dissolved before mixing the next component. DO NOT BUY KITS THAT ARE PREMIXED! 1 Gallon Recipe:2.4 grams MasterBlend 4-18-382.4 grams Calcium Nitrate (15.5-0-0)1.2 grams Magnesium Sulfate (Epsom Salt)5 Gallon Recipe:12 grams MasterBlend 4-18-3812 grams Calcium Nitrate (15.5-0-0)6 grams Magnesium Sulfate (Epsom Salt)Guaranteed AnalysisTotal Nitrogen (N)………………………………………… 4% 3.5% Nitrate Nitrogen 0.5% Ammoniacal NitrogenAvailable Phosphate (P2O5)……………………….. 18% Soluble Potash (K2O)…………………………………. 38% Magnesium (Mg) (Total)……………………………. 0.50% 0.50% Water Soluble Magnesium (Mg)Boron (B)……………………………………………….. 0.20% Copper (Cu)…………………………………………….. 0.05% 0.05% Chelated Copper (Cu) Iron (Fe)………………………………………………….. 0.40% 0.40% Chelated Iron (Fe) Manganese (Mn)……………………………………… 0.20% 0.20% Chelated Manganese (Mn) Molybdenum (Mo)……………………………………. 0.01% Zinc (Zn)…………………………………………………. 0.05% 0.05% Chelated Zinc (Zn) Shipping Policy: Please see shipping information below for options. Return Policy: Returns must be preauthorized and given an RMA#, no exceptions. Authorized returns must be returned within 30 days of purchase. Returns must contain all original pieces/parts/packaging and will be subject to inspection and a 15% restocking fee.