We have purchased a 90 gallon drilled tank (used) that came with an Eshopps RS-100 Reef Sump, Sun-Sun JUP-01 UV Sterilizer, SCA-302 Protein Skimmer, Sun Sun JVP-201 wave maker and some lights. We will be adding an Eco+ Mag Drive 700gph pump and a Carbon/GFO Reactor. My questions are: 1. At what point do we start using the protein skimmer and Media Reactor? 2. Will the 700gph pump be too much for the tank and sump? I am planning on creating a 30" return bar along the back of the tank (similar to what some canister filters return looks like) about 2 1/2 inches below the water level with 10-15 holes drilled into it instead of a normal two nozzle return. I hope this will help slow the flow down to around 550-600 gph.