Hey guys just wanted to run an idea by you to see if ya'll see a potential problem with my sump plans. I am planning on putting a 2.5 gallon refugium on my 10 gallon. I don't like the idea of drilling a hole in the back of my tank so this is my plan: :lol: I have a small emporer power filter hanging on the back of my tank. The slots for filters, etc have been removed and I have modified a Lee's skimmer to fit in the back. Anyway, my plans are to remove the skimmer and drill a hole in the bottom of the filter, silicone some fittings in and attach a piece of flex that would run from the bottom of the "hang on back" filter down to the 2.5 gallon refugium. From here I am planning on using a pump to pump the water back up to my tank. So what do you think? Will it work? My only concern would be regulating the water flow from the emperor to the refugium. I was thinking that maybe I could put some sort of valve on it. :? Some input would be great.