Are all ATO's created equal more or less? Anything I should look for when shopping for one? Any particular model you recommend? Thanks!
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they are different, but generally you like something with extra fail safes.
JBJ ATO and tunze are real good.
However if you get a reefkeeper or apex, you they can do this with just a float or 2. So keep that in mind if dropping $100-$200 just on ATO!!
Got a tunze best one I have ever had never had a problem with it over the years.