Hi all,
I am new to this site and I saw this forum on baffleless sumps. I am going through the same dilemma right now. Here is what I ended up doing. I have a 150 reef system with what I believe is a 20 gallon or so wet/dry sump. I took all the bio balls, filter drawer and sponge out. I cut the top off it and put my skimmer in that chamber. I put micron socks on the two drains, (where those trickle pipes used to be, I 90'd them downward) because the skimmer didn't like all the bubbles it made without the socks. I had a baffle that I put in originally and took it out. So anyway, I am now baffleless and still testing. I rechecked the water level with the return pump and skimmer off and on and marked each. Probably too late, but hope this helps.
David