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.

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.