The Kratky method is a passive hydroponic technique designed to grow plants without a water pump or active nutrient circulation. A plant sits above a reservoir of nutrient solution, and as the plant consumes water, the solution level falls. This…
A wick system is one of the simplest passive hydroponic methods. Absorbent wicks draw nutrient solution from a reservoir into a growing medium through capillary action. Because the solution moves without a powered water pump, a wick system can be…
The Nutrient Film Technique (NFT) is a recirculating hydroponic system designed around a shallow, continuously moving film of nutrient solution. Plants sit in sloped channels, their roots develop inside the channels, and the solution flows past them before returning to…
Deep Water Culture (DWC) is one of the easiest active hydroponic systems to understand. A plant is held above a reservoir while its roots reach into nutrient-rich water, and an air pump supplies oxygen through an air stone. The result…