It looks almost like mermaid cup macroalgae reaching for the light. Here's a rock covered with it I found while snorkeling yesterday
Are they safe to leave in the tank? I've got a handful of stalks shooting up in about 3 different places, the clowns seem indifferent to them. I need to scrape the tank during my next water change anyway, so removing them wouldn't be an issue, but I honestly think they look cool and kinda want to leave them if Its safe to do soa type of macro algae. Acetabularia sp.
Should be, you can easily remove those by hand if they get out of control. Honestly I love the look and never could keep them as other algae seem to starve them out. In my own experience.
interesting. mine only started showing up en mass when I had an accident with the tank getting way too hot while I was out of town and causing a massive GHA bloom. I'd had one stalk on a snail's shell and one growing out of the hermit shell, but since that bloom a not insignificant number of stalks showed up in from what I can see 4 places. been battling the GHA ever since but that one just opened up. kind of hope the other stalks do to
Mermaid’s cup and Acetabularia are the same organism.
