I ordered a Aqueon ProFlex model 4 that i was going to use as a refugium for my mixed reef 155 gal that I am setting up. The order from drsfostersmith.com came today. It is not the ProFlex Model 4! Instead it is the all glass mega flow model 4. Does anyone know about these? Should I use it instead? Return it? I haven't called drsfostersmith yet, I wanted to get so opinions of people in here before I did. Kinda erks me that they would just substitute product without asking first. Does anyone know the price for this sump is it cheaper than the ProFlex?