like Brad has stated . if you can get a float switch in there some how and have it ran from your RO unit then go for it you will just haveto figure out how to place it in the sump ,due to you having it full of a refugium and the skimmer . If you can drill the sump then go for it its alot easy to have that going then replacing water every3-4 days depending on your evaporation.
mike
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180 starfire front, LPS, millipora
Doesn't matter how much you have been reading until you take the plunge.
You don't know as much as you think.
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