....
Interesting...why is that? Are they not a threat to the tank? Are they not considered pests? I'm assuming they are filter feeders and could be benefitial???
Mostly they are viewed as a less prolific version of the aiptasia.... a good "cuc" in their own right. I haven't found any outbreaks like Kristy described. But I'm sure they are there, I didn't research it for more than 10 minutes.