I am a Beliver now I got a 125 Gallon Coral Life Super Skimmer running on my 135 Gallon Tank and a 90 Gallon Octopuss Protein Skimmer on my 135 Gallon Tank.It has cut my Nitrates by more then Half at a Very High Nitrate Level that it was at.Nitrates are at 50 now that was only with the Skimmers running for only two Weeks.The Nitrates were off the Charts I have a Large Bioload,nice to have a Healthly Tank with lower Nitrates. 