Systems

Deep water culture (DWC) keeps roots submerged in aerated nutrient solution. Nutrient film technique (NFT) runs a thin film of solution along sloped channels past the roots. Both are active systems, but they manage oxygen and water differently. DWC Roots hang in a...

A Kratky system grows plants in a container of nutrient solution with no pump. The plant sits in a net cup above the water, and its roots grow down into the solution. The Air Gap As the plant drinks, the water level drops. The exposed upper roots take in air, which is...