I've gotten a candy cane hitch hiker on a zoa colony I bought about 4mo. ago. It had been opening wide almost every day, but this week he has stayed almost completely shut and am worried I am loosing him. What are some good ways to encourage him to open better and make him the happiest cane around? He is in moderate to high flow, and feed as much as he is open which hasn't happened all week. He is also positioned about mid tank and pretty much by himself. All suggestions will be considered.
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