I can't seem to find a "trust worthy" ATO. I'm currently running a reefbreeders that's not the prism, it's the magnet with the eye piece, and it's constantly missing the mark. My system is big enough that I usually catch it pretty quick. I'm running an apex but their ATO seems like waaaay too many pieces. I want something simple. I also have an old Tunze ozmolater laying around, but I think it's the nano version, it's also caked in kalkwasser (don't ask). So I guess I'm in the market for a new ATO. I've never found one that makes me warm and fuzzy.