Why do I always feel like you are yelling at me Lord of the reef? I too have no skimmers, and have had none for 2 years. I think that, besides the no nitrates, no phosphates, no skimmer, and a comstant ph level (because the light is never shut off), the nicest thing is the infrequent water changes. My fish dealer tells me that I don't even have to change as much as I do (10 gallons a month). I'm not sure how it works, but it does.