My Reef Creations MR-2R Recirculating Protein Skimmer

You want to choose your feed pump based on how many times you want to turn your water volume over through the skimmer. I typically recommend turning your water volume over 1 1/2 to 2 times per hour. For example a 300 gallon tank may use a 600 GPH feed pump, which will give maximum tank water recirculated water turnover.

My Reef Creations MR-2R 450G
Recirculating Protein Skimmer   
Box Dimensions:  10" x 10"
First Riser OD:  6"
Second Riser OD:  4 ½" 
Number of Injectors:  2 
Gate Valve (standard):  1 ½" Threaded 
Recirculation input:  ¾" Bulkhead 
Pump input:  1" Bulkhead
Total Height:  26 ½" 
Rating:  450 Gallons 
Recommended Recirculating Pump:  PW150 PS
Recommended Feed Pump:  300 - 900 GPH - MAG 5
Quick Release:  Standard

Recirculating skimmers are available from the MR-2R through the commercial line. Each will have a minimum of 2 becketts and all will be made of 3/8" or 1/2" blue cell cast acrylic. All beckett injectors are plumbed together, like the one below and has the same standard features as our regular skimmers...silencers, true needle valve air intake, spears unions and plumbing parts, cell cast acrylic, threaded large gate valves, and removable becketts.