Mermaid Cup Algae

[mark]

never heard of it before, just how bad does it get?

is it like this stuff?

[Twinn]

I have the exact things pictured in my tank, can't find anything to eat it.

[skabooya]

everything I read about them says that they are temporary and dont survive long in a tank. I personally love the look. But I have a macro tank. lol. How long have you had this issue ?

[Twinn]

For me two months and spreading

[ChronicReefer]

They look exactly like in the picture you've posted, and I've had them for 6 or 7 months! They started off confined to a tiny area completely surrounded by zoas. As far as marine tank algae goes, Mermaid Cups look the coolest to me! When they started to get unruly, I'd reach in and trim them back with the forceps. I figure a piece must have escaped my grasp, and landed on the rock near the bottom... Where it is growing like crazy! I've entertained the thought of trying another sea hare... Im also in the process of increasing my magnesium. I've read that algae hates high magnesium levels, and will recede before your corals feel the difference... Worth a try I figure!

[skabooya]

Well i guess that goes to show that not all info you read about macros is accurate :P
I would honestly try to sell some of it to see if anyone wants it before trying to kill it off. I think that is lovely and us macro algae lovers would love some.