Thank you very much, hard to find such basic info. i guess i have seen one then, i used to have a fish tank. i plan on building a 5 gallon bubble bucket, and if thats all there is to it is a container, hydroton, netpots, bubbler, nutes and airstone I think i will be fine. I guess the reason I was so confused was looking at the instructions here: Lets Build a Bubble Bucket *Step by Step* - Grasscity.com Forums all kinds of pvc fittings, multiple holes drilled, are these all necessary? and how do you know how high to have the water? I guess its okay for some of the roots to stay completely dry?