I move the Fluval 404 from the main tank to the QT tank. It's overkill, as my QT tank was 10g.

Which is why I can't do as PuffLuv suggested. What if left half the rocks out for 6wks, then moved the other half out for another 6wks? I guess the ick still be in the gravel anyway?
When I move the Fluval to the QT tank, I leave the filtering to the live rock and protein skimmer (except that isn't working due to the medication). I was told I could get rid of the Fluval, but I haven't done it yet. It has been helpful having it with the various problems I have had.
Thanks again,