So if you where to do it again you would set it up like a reef tank, with an external Herbie or bean style box on the side? I am in the process of setting up a new tank (120x60X55CM) and want to go sump. Just can't figure if better sticking with the ugly box in the tank, a hand on box like yours or just having the box built to the side of the tank and then running a Herbie or bean style setup. suggestions? what size pipes and pump rate would you suggest for a tank this size - you have more experience than me.
Actual one end of the entire tank would be about 1.5" shorter and some smaller teeth would be used, but then it would go to a shallow bean animal style over flow.
I most cases a slim style like the CPR's are best, the 70 Gal I have is very exposed, but folks hardly even see/notice the overflow/return.
A smaller, but more costly option is the Mame all glass version.
2 of those would work on a tank your size. 500-600$ though.