Identifying these coral specimens

[Kazumi4]

I've had my green favia for around 8-10 months, and it's been thriving, more than doubling in size. Lately, though, I've noticed it receding rapidly from the bottom, with a white slime-like substance forming in the affected area. The entire coral isn't feeding as it should, and polyp extension is minimal.

This issue seems to be isolated to my favia, as none of my other corals are affected. I did try dipping it in Coral RX about 2 weeks ago, which brought some temporary improvement. However, the problem's back, and I'm stumped. I attempted another dip and found around 20 white bugs. I'm not sure if they're harmless copepods or something I should be worried about.

Can anyone take a look at this video and help me ID these bugs?

https://www.youtube.com/watch?v=uE-hAN3nRL0

[vyno9]

You might want to take a look at this thread, seems similar to what's going on with your favia.

http://www.reefcentral.com/forums/showt ... ?t=1874822

Anything new been added to your tank recently?

[nixora]

Appears to be some sort of crustacean, possibly a type of copepod. Considering you've had them show up after the Coral RX treatment, it's likely they're opportunistic. You got any wrasse in the tank that could help control the population?