I am in need of a protein skimmer for my 54 gal. corner bowfront tank with built in overflow. I have limited space in my sump (old wet/dry acrylic box w/out bioballs). I already have a mag 5 in there returning the water back to my tank. My problem is that I would need a skimmer and pump that can be placed outside the sump. Efficiency, reliability and ease of use are important. Any suggestions will be greatly appreciated. My LFS tried to sell me a Marineland skimmer for $150 but I've read these are a waste of money! There are so many brands out there and my LFS does not carry many and I really don't trust his advice much anymore.