I am looking at the MRC MR-2R for my build, 210G display with a 60G sump. I need some help in sizing the pumps and hope someone here has the answer. MRC recommends a 2X turnover pump for the feed pump so that is pretty easy to figure out. What I am confused by is the recirculation pump. On their website the call out the Vectra L1 which has now been superseded by the L2. The L1/L2 is a 3100GPH pump which seems pretty large to me but I am new to recirculating skimmers. I contacted MRC and asked for a GPH recommendation, but they wouldn't give me one. So my question to you fine folks is if you have one of these skimmers, what are you using for the recirculating pump?