Hey I want to make some design tweaks to allow for adjustable water height from the skimmer chamber to the return. How would I go about doing that? Just 2 x simple 1/4" threaded holes for thumb screws, lowering the cut out from the skimmer chamber to return, and then just adding a baffle with a sliding cutout for the ABS thumb screws?Thanks. This is similar to how I was thinking of designing my sump for the 200+ FOWLR build I'm working on. I do not plan on running a refugium and my ATO tank is a 25g in a different room, so I would not need those two chambers.
Also, does your design allow for an adjustable water height? If not, what is the standing height in the skimmer and return sections?