Ok. My scrubber has been set up on my 125 fresh tank for a bit.
My nitrates and ammonia are zero (which is great, as my well water is 35ppm nitrates, so water changes aren't helping). I am, however, currently using ion exchange resins in this tank to insure the nitrate level is in check. I have stopped using them for 5 days now, so we'll see how the scrubber fairs. The bio load is medium.
Here are some pics of the third cleaning of the screen.