My sump/fuge is going to be directly under the Main tank. I will need two 90deg elbows (1 90deg elbow to get pvc under tank, then one 90deg elbow to get pvc down into sump/fuge. This would mean that the water would have to flow through 3 90deg bends to reach sump and 3 90deg bends to reach fuge (1st 90 - tee to horizontal, 2nd 90 to get under Main Tank, 3rd 90 to get down into sump/fuge). Will this restrict my drain flow to much? If so, is there a better way to get drains down into sump/fuge without so many 90deg bends, like spaflex?
Also on the small specimen box for overflow, do the teeth need to be cut on all three sides, or just the front?