i would leave the refuge the height like 10.5 and the the baffles have like 3 under over and under keep them around 8" y9ou want ot have somewhat a drain off too like you stated.
However its going to depend on how much water drains off after the pumps shuts down. you can always have a small hole drilled into the return line. Just above the water line so the siphon breaks the water there.
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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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