Hey guys. I am trying a little experiment with a 75 gal freshwater tank of mine. I bought it as a complete setup and it came with a sump and protein skimmer as the original owner had it set up as a reef tank. After doing some reading I found out that protein skimmers don't work all that well in fresh water because it doesn't tend to create a foam as easily as salt water, so I took the skimmer out and have just been using the sump in the standard 3-step filtration configuration with carbon/zeolite blend sandwiched between two filter pads. I got to thinking though. I put the skimmer back in and added a large air pump, which I connected two air stones to and placed in the bottom of the skimmer column. I then adjusted the water level inside the column to just under the lip of the collection cup. Any thoughts on whether or not that much increased airflow might actually make the skimmer work, if even to a diminished degree over a salt water setup? I figured I already had the skimmer so why not try. It's not like I went out and bought one or anything, and if nothing else, it should be a great way to aerate the water without it being visible in the tank. Thoughts? Anybody tried this already?