Hey this design is great and simple. I read through this and went and bought all I'd need to make it already.
I have a couple questions though:
how did u end up getting your airstone line in?
how did you cap the bottom?
did you glue a piece inside where the skimmate overflows into the drain line?
The pieces I have don't have a spot where it can overflov into and then drain, it's just slanted back to where it is pushing up from.
Thanks,
Mat