I use the Apex for ATO and like it. Mine is setup with an I/O breakout box that 2 floats (for redundancy) are hooked up to. I then control an outlet with an Aqua Lifter pump. I have an alarm setup if it has run too long, will shutoff if salinity drops, etc. Works like a champ - the weak link is the float switches.
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"Don't tell fish stories where the people know you; but particularly, don't tell them where they know the fish." - Mark Twain
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