I have been asking my LFS
about sump building and they told me the best way is that the first section should contain the skimmer. The next section should be where the filter media
would be filter wool, bio balls etc.
What I can't understand about this design below is that when water is pumped into the refugium surely the sand is constantly going to get blown all over the place, and then pumped up into the main tank.
Should something be at the top of the baffle between the refugium and the return pump section, like filter pad wool?
What is the purpose of the three baffles that are very close together in the middle?
This is the design I want to copy once I get my head around it!!