How To Build A Hydroponic System For Lettuce. This reservoir will hold the necessary water and nutrients that your plants will require. The ph level tells you how acid or alkaline the water is.
By using my take on the kratky method and the viparspectra xs 4000 grow light, i hope to harvest fresh salads all summer! Use your 2in hole saw to make holes in the lid. Lettuce is very easy to grow hydroponically, and we bring you everything you need to get started: