What Size Do You Like for Reef Sump in 4x2x2 tank Stand?

[my3kidsdad]

Wow you guys and girls are amazing. What good info.

What you all seem to be saying is buy the internal skimmer, external pump, ATO with baffles, external heater, and determine the return size according to your tank size and return hoses, etc. to set your baffle placements. I know i have missed some things like reactors. thanks for the heads up.

Then design the sump and (sump overhead room for plumbing) and stand to fit. Here's a question: Have you ever considered installing/building in a rubber floor under the sump to catch any spills?