Ok so I've had a tank for a few months now and seems to be fully cycled. No spikes or major changes in water parameters and nothing unappealing happening in the tank. It is a basic 20 gallon with 4 small fish, a cleaning crew, a few hardy coral frags, and a little over 20 lbs of live rock with a good amount of coralline algae on them. I recently changed my tank stand that now has a covering over the front so I want to think about ditching the HOB equipment and make a small (10ish gallon) sump. I don't mind a couple pipes going over the rim of the tank. I really wanna be able to get rid of the HOB skimmer and get it in a sump. Any ideas or blueprints in mind to make a simple, affordable, and effective sump??


