Hey guys!! I have a Reef Octopus skimmer,only used for about a month because it was apparently too much for my tank--almost killed all my softies!! It works very well !! Not sure of the size--but my tank is 125 gallons and it kept the water way too clean.Paid $250 for it---bout gave my hubby a stroke when I told him we had to take it out and go back to the smaller skimmer--lol!!! But I was right--our corals are doing soooo much better now!! Its late right now--I will try and post a pic tomorrow of the skimmer.Looking to sell for $150 or make equal trade in corals or something related to saltwater tanks.Thankyou!!