I am re doing my sump since my 40 breeder is down now. Going away from the split flow to to just single flow to the sump. My question is is there any pros or cons having the baffles next to the skimmer opposed to next to the return pump? Also is there a set height the baffle has to be in the middle, I'm doing over-under-over flow for the baffles? My sump is going skimmer-fuge-return. Any insight is much appreciated.