the sea-clones are great skimmers with a few mods, I ran mine for over 5 years(still works great) retired it when I got the turboflotor a few years ago. My tank is a 120 that went from being a fowlr tank to a reef over the years. I also heard that the older sea-clones were alot better then the newer ones, I know that the old maxi-jets with the round power cords do last alot longer then the newer ones with the flat cord, perhaps this is what the difference is I don't know but if you change out the impellers plastic wheel with a needle wheel and the air contol valve on the sea-clone it will perform better then alot of the midpriced skimmers out there today.