OK. I need a bit of help. I am starting an established 180 I bought this weekend and am changing the design.
I have a 100 gallon Rubbermaid stock tank for a sump. I heard they are hard to baffle, so i thought if I put two 18 gallon rubbermaids sunk inside they could work as baffles. The first would be a skimmer compartment and use the skimmer output as circulation back in the main sump. The second I coudl perforate the sides of theone with rock and sand to promote waterflow. I know, I may have to use a small submersible pump in the end to accomplish this.
I am using the extra overflow box because I have a Little Giant 5.5 and I think that will cause too much flow for a single overflow corner, I may even use 2.
Either way, this will be a 180 gallon FOWLR
with about 240 gallons total volume. This look like it works or do I need to adjust something.