Corals above waterline

DevonMeep

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Hello again everyone. My tanks just got its first few corals in it and I had a question. When I do water changes in my 29g the top of the rock work is exposed to the air. Since I obviously don't want this to be blank rock forever I was wondering, how long can a coral survive outside the water? It would only be exposed for a few minutes while the water is drained and replaced. Or for another question, what corals would be able to stand this process the best?
 

pugcrush

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^^^^^^yup, people call it low tide in our tanks lol. Your corals will think they're in the wild.
 

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