Seaclones are OK I have one on my 55 that pulls nice dark green slimmy skim but got to clean j tube collection cup weekly. I got it as a this will do for now but two years later still have it and honestly won't get another til I finish adding my frag tank and sump just because I'm adding about 50 gallons of more water tommy system so going to need a one for more volume of water but honestly I think its good as long as you keep up on cleaning and water changes. Also has taught me a lot about how to mess with and tune it skimmers I know what to look for because of a ton of research so its pulls good skim and kind of makes you keep an eye on the tank but that's just my opinion