When setting up your hydroponic indoor garden and once you’ve decided on the growing medium you will use, you will need to decide how you will feed your plants.  In a passive technique, the water and nutrients wick up through the medium to deliver the nutrients to the roots.  In an active system, you will need a small pump to keep the water and nutrients circulating.

The nutrients vary but most people using hydroponics agree they should be in ionic or inorganic form.  Most of the nutrient products involve dihydrogen phosphate sulfate, nitrate, potassium, magnesium, and calcium. Some people feel that hydroponics also calls for the addition of nickel, chlorine, boron, zinc, copper, manganese, and iron, among others. You should know, however, that the plants themselves will use one or more of these specific nutrients faster than others. The Ph may be changed by the plant making it more alkaline or acidic.

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