Which seems appropriate?
Curve 9
http://vividpetsupplies.com/collect...e-magus-curve-series-in-sump-protein-skimmers
NAC9
http://vividpetsupplies.com/collect...ble-magus-nac-series-in-sump-protein-skimmers
Classic 400
http://vividpetsupplies.com/collect...ucts/aqua-euro-classic-in-sump-skimmer-series
Nyos Quantum 160
http://vividpetsupplies.com/collections/protein-skimmers/products/nyos-quantum-skimmers
Reef Octopus 225
http://www.bulkreefsupply.com/reef-octopus-classic-225-internal-protein-skimmer.html
Curve 9
http://vividpetsupplies.com/collect...e-magus-curve-series-in-sump-protein-skimmers
NAC9
http://vividpetsupplies.com/collect...ble-magus-nac-series-in-sump-protein-skimmers
Classic 400
http://vividpetsupplies.com/collect...ucts/aqua-euro-classic-in-sump-skimmer-series
Nyos Quantum 160
http://vividpetsupplies.com/collections/protein-skimmers/products/nyos-quantum-skimmers
Reef Octopus 225
http://www.bulkreefsupply.com/reef-octopus-classic-225-internal-protein-skimmer.html