Reef Octopus Regal 300EXT Recirculating Protein Skimmer300 EXT Advanced Control Recirculating Protein Skimmer The innovative Reef Octopus Regal 300 EXT recirculating protein skimmer provides powerful filtration for aquariums up to 700 gallons where precise control is needed. The Reef Octopus Regal 300 EXT is made of high quality cast acrylic that can be completely disassembled for cleaning. Its hybrid conical body naturally stabilizes and concentrates the organic rich foam as it rises. This Regal skimmer