hmm.. i have a 90 gallon w/ an iwaki 30rxlt ?
and my sump. im plannign to use the old 55 and just partition the last part and put my iwaki inside of it, its not going to be in the water
so 3/4 of the 55 sump will be w/ baffles and all, and 1/4 will be the iwaki ... and plumbing..the return...