Jep21
Well-known member
So im considering upgrading from my cpm hang on the back refugium to an actual sump/refugium thats about 10 or 20g. Im not considering drilling the tank since the tank is currently running.. Was wondering if anyone that has had experience with hang on the back overflow boxes can give an input about them whether they are good or bad i would like to hear all... The hang on bang overflow box im thinking of getting is the eshopps nano overflow box rated for 30g.. Lmk what u guys think..