EFT - Ebb and Flow Technique. Known in slang as Flood and Drain. Roots are usually just sitting in dry medium and flooded and drained several times per day.
AFT - Aerated Flow Technique. Known in slang as Deep Water Culture. Roots are in air for a few inches and in the nutrient solution for a few inches. Solution is aerated constantly.
DFT - Deep Flow Technique. Known in slang as Raceway Hydroponics. Roots are in several inches of water that is constantly circulating via pumps. Also known as Dynamic Root Flotation.
DIT - Drip Irrigation Technique. Used in deserts because of it's extremely efficient use of moisture. Roots are in any number of mediums, and fed with drops or trickles 6 or 8 times a day.
RMT - Root Mist Technique. A mist is sprayed constantly or at intervals onto the roots. Also known as Aeroponics.
FFT - Fog Feed Technique. (PREVIOUSLY MENTIONED) A very small size of droplet is sprayed onto the roots at all times or in intervals.

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