hitchhikers and coral

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boosted_msp

Aquarium Advice Regular
Joined
Mar 30, 2013
Messages
80
Location
Kentucky
Got a lot of coral in one lump from a guys tank. Had a bubble coral crawling with these tiny purple "nudibranches" pick alot off the bubble coral but they keep showing back up.

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Two question, what is this ugly coral lol, bright green florescent mouths under actinic and the dark spots shown on them is the nudibranch/ slugs I was talking about.

Should I keep picking them off or leave them?
 
It's a species of zooanthids keep them. At my LFS we sell those for anywhere from 5-40$ so I'd keep them
 
Its a big colony, had no color when I got it, but the green mouths colored after a couple days and it looks like the rest is changing too.

Any idea on the slugs?

Also There's all kinds of corals Ive got, but I have no idea what they are. the app for this website always crashes when uploading pics.
 
Now what about the purple things? If you have ever watched the movie flubber. Aside from the violent bouncing lol, that's exactly how they move. The bubble thin they were on does not look damaged so I'm thinking they are not predatory
 
I don't see anything purple. I see red planaria though. Common red flatworms. They are a bit of a nuisance.
 
Pretty good idea, my tank is fishless due to ich. It will give me a little while to eradicate them while my dt and fish recover.
 
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