Looks like a easy setup. Haha. Got another crazy idea. As I do not have the option to increase my tank size, I was thinking if I could add 2 sump below my tank, each on top of the other. Water will basically follow down from main tank, into refegium or filter tank. Then return pump from most bottom tank back to main tank. Size of my main tank is 1.5ft, planning to add 2 more 1.5ft tank just below my tank. Anyone seen such setup?