http://216.187.96.54/vbulletin/showthread.php?t=33008
Some on my tank here Andrew.
http://216.187.96.54/vbulletin/showthread.php?t=30063
More Tunze info here.
Hope some of that helps. The brackets are almost identical to the stream pump brackets, if you have seen them. The skimmer uses two. It can be slid up or down the brackets, depending on the water level. They are not used in the sump mode.