I got some ideas for a sump yesterday. It got me thinking maybe I should get a new skimmer while I'm at it. Put it in the sump. I have a 55 gallon tank w/ 75# of rock. currently I'm using a Red Sea Prism Pro. It was given to me. Sometimes it seems like its working great or times it just doesn't foam good enough. Other times I walk away and come back and the collection cup is filled to the brim, spewing every where. I could keep complaining about it, but I won't. So what do you think would be a good size skimmer for my tank? I know bigger is better. Just need some direction please. Thanks