An Introduction to Greenhouse Hydroponics for Potted Plants
Hydroponics is a method of growing plants using mineral nutrient solutions in water. This is accomplished without soil, either putting the roots directly into the water, as is common with lettuce pools, or rooted in a medium, such as perlite, rockwool, or coconut husks, which is more common for potted plants. Because the nutrients are dissolved in water, they go directly to the roots. Soil can provide a buffer, with hydroponics the roots get exactly what is put into solution.
