The hydro in hydroponics refers to the water that is used to replace soil in a hydroponic growing system. In this way, nutrients are delivered straight to the plant's roots without the need for soil. To make sure that the plants you are growing are healthy, you need to understand how water moves through your system, how to measure the cleanliness of the water, and how to know the proper Ph level as well. In addition, you will also need to be aware of the right amounts and kind of nutrients you should add to the water and when. Knowing all of these things can insure that you have healthy, happy plants that give you tremendous crop yields.
