So I have been trying to figure out how to turn my MegaFlow4 into a fuge. I don't see it happening. If I put a larger sump/fuge under my tank, I would have to take the tank off my stand and do it from above. Even the W/D had to be loaded from the top. So now I am thinking about putting a fuge next to my W/D sump. I have a Mag5 supplying water to my chiller. I was thinking of using that pump and after the chiller just returning it to the fuge. I would hook up the fuge, or drill openings for the fuge to overflow back into the sump. The good thing woul dbe that the return section would be in between the fuge and the skimmer section. I'm thinking a 10g tank would be too small. I might be able to fit a bigger box. So would a 10g tank be too small for my 90g? Also, would a Mag5 be too much flow for the fuge? Is a "fuge" that big of a deal compared to just a turf scrubber? Meaning nutrient export would be about the same, but a fuge offers a bit more. Is it worth it? ETA: I have a space of 20Lx14Hx14W inches.