I would think about drilling a bulkhead and running the skimmer externally outside of the sump, that way the pump for the skimmer isn't adding heat and it would give you more room and volume in your sump. Easier to work on also.......give it a thought....
Thanks, You have a very good point there, But the problem is drilling. I don't know anybody who can drill glass. I don't want to do it my self. I'm not good with glass works. I can actually put the skimmer out of the sump but the pump will still be in the sump. The pump that came with the skimmer is a rio 1700 i think and it can only be used fully submerged.