@X: I think you helped me identify the return pump as a mag 18 ( on my thread in getting started section.). The tank is 75 gallons. I'm not nearby now but I'm looking at a ruler and Im pretty sure the drain is larger than 1". probably 1.5 or maybe 2. The drain pipe is definitely larger than the return pipe.
I keep the water level consistent in the sump and add to it at least 2x day.
I'm thinking of making the trip to semi-LFS
today to get a new skimmer. The only one I can walk out the door with is a reef octopus 110. Would that be a good replacement or should I order online?
On the wet-dry, should I do as others have suggested and remove bio balls. Add clip on light and macro algae in first section? I plan to convert to fuge but tackling 1 project at a time.
Better question: which would you do first? Skimmer vs fuge? Will either address my ball valve question?