Here is a small easy one I rigged up in my living room. It worked just wonderful. The pvc overflow that Joey tells about in the video is very inconsistent over time and came very close to flooding my living room- which didn’t work imo.This tank is going in my living room and one in my family room (new addition) an overhead sump is not going to work.
there is a spray bar that flows water over the bio ball substrate for the peace lily and pothos combination. Under the bio balls are ceramic rings that sit in the submerged area just underneath the bulkheads.
the magic trick about sumps is you need to kill the power to your tank and watch what it does. I never leave a sump unattended over night with out doing that. If you have a syphon from your pump, it can overflow. If you are too full, you can flood. The biggest benefit to an overhead sump is if the power goes out, all the water just ends up where it is supposed to be.