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Old 03-11-2009, 01:56 AM
Mathmattx Mathmattx is offline
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Join Date: Mar 2009
Location: Seattle
Posts: 18
Default Um..probably not

I dont think so! The problem is mainly with the solubility. The solubility of commercial fetilizer varies greatly. But in theory...Besides the three major nutrients you've got in reg. fertilizer, called macronutrients (nitrogen, potassium, and phosphorus), a good home-made hydroponic fertilizer will also contain sulfur, calcium, and magnesium. Several important micronutrients including manganese, copper, boron, cobalt, iron, zinc, and molybdenum are also required for healthy growth of most hydroponic plants.


Since commercially available fertilizers are commonly meant for soil-borne plants, they lack many of the above listed important micronutrients. A hydroponic cultivator can (in theory), however, convert a commercial fertilizer into a home-made hydroponic fertilizer by adding the essential micronutrients contained in chemical substances of daily household use.

For most hydroponic plants, which develop roots, the cultivator can add one quarter of a teaspoon of Epsom salt to 400 ppm Maxsea 3-20-20 (1 level teaspoon per gallon of tap water) in order to make a good home-made hydroponic fertilizer. It can be fed to the plant for ten days after it develops its first roots.

After the first ten days since the appearance of roots, 600 ppm Maxsea 16-16-16 (equal to one rounded teaspoon) should be used as a hydroponic fertilizer with one quarter of a teaspoon of Epsom salt added to each gallon. When the plant enters its flowering stage, a rounded half teaspoon Maxsea 3-20-20 should be mixed with a rounded, half teaspoon of Maxsea 16-16-16 in each gallon of water and one quarter of a teaspoon of Epsom salt should be added to each gallon. In the last two weeks before harvesting, the hydroponic plants should be fed with plain water.

Again...would only do this in desparation DO NOT RECOMEND IT. by the time you do all this better to ship some actual hydro ferts from somewhere!!!!
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