Had to dig a while to find this video in the link above that I knew Tom had linked to and this was our first real serious introduction to hydroponics and I think it is a good video to watch first. My wife watched probably all of Hoocho’s videos but the one that really swung us over to the Kratky system was this one
We haven’t printed any of the stuff he has since we wanted to try it out first as cheap as possible but if we are still as happy with the system after this season I think we are going all in next year with those printed thingies he has.