Octopus is a great skimmer. I bout an octopus rps2000 off ebay. New for $159 plus tax cuz im in California. Its rated for up to a 165 gallon fully stocked.........185 lightly stocked. Check that out first before you buy. Dont know if its still on sale ( it was when i bought it, might have gone back to regular price of $239). Its the older style octopus recirculating skimmer which in my opinion is a little better and more efficient than the newer style they have now. Its a huge beast though standing about 25.5 inches tall so make sure you have the room under tank for it. Its an in or out of sump model too. I also have had great success with the Hydor Performer series as well, but the old style and not the new one.