its a 30 cube.i have a hang on wet dry on it now but im picking up a refugium from custom king tonite.i was gonna use an external overflow but im starting to think it would be better to drill it.im not sure what the best setup would be. i was hoping to find someone who could recommend the best setup and install it for me.i was wondering if there was a way i could get enough water flow without adding a powerhead inside the tank....
you could get the flow with a closed loop system and was up in the air on a 37g column tank i have on overflow. i would drill it and get a internal overflow box made for it. talk to jim at hof or custom king he can make the overflow box for you