Quote:
Originally Posted by untamed
I think it has been well experimented/accepted that too high temperature causes the coral to expel its zooanthelle. I don't know about rapid temperature swings...but high temperature is certainly bad.
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Absolutely agree. I've seen tanks that go up inthe mid 90s and lose most of the corals. Mine never topped 89, but it did swing 10 degrees daily, for almost 2 months.