Magnesium Sulfate - Epsom Salt - 50 lbs.
Magnesium sulfate (or Epsom salt) is used to correct magnesium deficiency which can be common in the hydroponic production of vegetable crops. It is perfect for use as a part of a hydroponic nutrient solution because it is a inexpensive, highly soluble and naturally occurring.
Hydroponics application: We dissolve magnesium sulfate in a solution of Master Blend Hydroponic Tomato Formula at the rate of 0.5 pound per gallon of water to make Part B of a 2-part, A-B hydroponic nutrient concentrate. For details on making Part B concentrate, see the description of Masterblend Hydroponic Tomato Formula.
Synthetic but acceptable for organic growing with restrictions.