Well 3 days into the new tank and the fox face seems to be ok...I didn't realize they change color when they get nervous. Now a couple questions, first, do I need to try to get the fox face to eat some thing other than the hair algae in the tank, he would not even go close to the algae sheet on the clip in the QT. Also on maintenance, how often do you all tear down the sump system, IE: take out the skimmer and scrub it down, pull out the return pump/s and clean them? Or is that some thing that needs to be done at all, I have taken out the sponges and rinsed them in RO water but am not clear as to the other items in the sump. How full do you keep your DT with water, as of now I have mine a couple inches from the top, also with the overflow box I have the water about 2 inches below the teeth, and I am having trouble with flucuation...the over flow fills nicely until quiet and then will empty out to the top of the stand pipe,,,,gurgle bubble and generaly make alot of noise...any idea how to stop this?