It's baffling me because the algae will grow on health coral tissue. I had activated carbon in a mesh bag (high flow area) for a while and thought that might be irritating the corals. Also thought maybe the Vibrant bacteria blend combined with slight organic carbon dosing was causing the irritation.
Stopping feeding is an interesting thought.
Water changes are easy but as I am finding out, they aren't doing much.
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90g Mixed Reef
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