autotopoff.com ATO. Get the dual float model. I bought mine used in 2008 and still use it. I bought a second one several years back that I've used off and on. No issues...just have to swish the floats in the sump water to clean them off from time to time.
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"The moral is the chosen, not the forced; the understood, not the obeyed. The moral is the rational, and reason accepts no commandments." - John Galt
Current Tank Info: Cadlights 60G Arisan II mixed reef with 2x MP40s and 24" ATI
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