The overall setup, Still working on getting the White PVC out of the tank...
There was not enough room for one large sump, and I had 2 extra 30 gallons laying around, so I came up with the bridge idea to make them one sump.
Into the mechanical filtration area- the HOB's I usually keep running so I always have some extra cycled filters, just in case.
Through the mech filters
over the bridge
The coffee cans make sure that even if the water level drops super low, the siphon wont break. and I filled it up with crushed terra cotta (my favorite media) for some extra filtration. Can't hurt right?
The top of the bridge, note the airline hoses
The bio filtration area. Combination of a powered UGF and a refugium for floating plants.
This pump is connected to the UGF. It pulls the water through the plates, then through the coffee can that is filled with even more crushed terra cotta (plus it keep the gravel out of the pump) the other part of the pump intake goes to the bridge to keep the air from building up. The output from the pump goes to the opposite side of the tank, where it is released below even more gravel, resulting in a R-UGF for that area.
All in all it works pretty well, and saying the only thing I had to buy was some 4" pvc, it was well worth it. Also a good use for all the crap clownpuke gravel I have accumulated from used tanks.
These pics are a little dated, I have since added a few gallons of bioballs and removed some of the crap in the mechanical area, as well as added a few immersed plants to the refugium area.