A Friend of mine bought it and no longer wanted the frag so I got it off of him. Problem is he doesn’t know what it is he said he got it 2 days ago and forgot what it was. The receipt. Doesn’t state what it is either. I think I narrowed it down to these 3 but don’t know. Any input would be...
When I bought the favia it showed very healthy and still is healthy, but about three weeks back this little thing started to apper and it has gotten a little bigger. It also seems to be coming out of the favia's tissue. Any ideas on what it might be, if it's harmful to the coral or not?