Ya the pump is the only thing I'm worried about. I don't wanna buy a pump and find out its not of high enough pressure (that would suck).

Ya I was looking at your pics, and I'm guessing your risers are like 2-3 inches from the top??

I might need to build a stool under the pvc or something. As for the pot size I wanna use the system for vegging and then later for flowering. So I realize I'm gonna have to have 2 lids, 1 lid with more holes and smaller pots, and another with fewer holes and larger pots. (Maybe 3 inch for vegging and 5 inches for flowering???)
What size pots are you using???

:Tomcat: <===== Look what I found!!! lol