My Reef Creations MR-3R 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.

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: 32 ½"  
Rating: 600 Gallons  
Recommended Recirculating Pump: PW150 PS or PW 200PS
Recommended Feed Pump: 500 - 1000 GPH - MAG 5  
Quick Release: Standard