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I dunno about them being coral munchers. They are essentialy opportunistic herbivores. I've had my share of explosions of these guys over the years. I can't say they've actually eaten a single coral. Believe me that spans a lot of years, and a lot of corals. Do they multiply fast? They certainly can, and if they have enough food, they seem to multiply in harmony with the food supply. Should you keep them in check? I think so. I think their worst character trait is their appetite for muching on coralline algae when there isn't enough film algae for them. The coralline on your glass will start to look like small scattered specks instead of large solid patches.
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Why can't my wife see this stuff as an investment?
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