coralife super skimmer 65

[synyst3rshadows]

How much space behide my tank do i need?I have 3" and a half.Any other good HOB skimmer that will fit?

 

[wrenchhead]

I have 4 1/2 inches behind my 30 and my corallife 65 super skimmer.It is touching the wall so I think that's the minimum.
Hope this helps

 

[synyst3rshadows]

Does any one know of a good one that will fit?