I'm a little confused. What is the difference between NFT and a constant flow grow bed? They both have a constant flow of water, both use some form of media. The only difference I see is air gaps between the netty pots and it makes for a thinner grow area. Can somebody educate me why use one over the other. I plan on adding a NFT off the side of my system and make a strawberry row out of it. I'm using NFT just for space saving in my basement. Okay oh wise ones, time to teach the newbie.