The growing of plants without soil is called Hydroponics. It is widely used to grow lush, healthy indoor plants and good quality vegetables, fruits and herbs. Plants absorb nutrients as simple ions in water. The nutrients in the soil dissolve in water and the plant roots absorb them. When the plants get adequate nutrients, the soil is no longer required for the plant to thrive. With the use of proper nutrients and the right artificial light source, an indoor gardener can achieve amazing results. A complete controlled environmental agriculture system should have controlled light, temperature, water, CO2, oxygen, pH and nutrients.
Hydroponics is simple and efficient. On alternate days a pH check is done and the water level is topped up. The nutrient is changed every 7 12 days. To turn the light and garden on and off automatically, a timer is often used. Amongst the different forms of Hydroponics, deep water is the purest form since the roots are directly exposed to the nutrient solution. Deep Water systems use a small air pump to keep the solution well oxygenated.
Another method of Hydroponics is the Ebb & Flow or Flooding & Draining systems. The root...
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