What’s this white stuff?

[d3ro]

I got some secondhand corals and I’m trying to clean them up. Are the white tubes anything to worry about? I know the brown tubes are feather worms.

Backstory: Yesterday I bought a tank and I didn’t realize it still had fish and corals in it. The tank was nasty and very under maintained. I quickly cleaned it out and made it a quarantine tank for the corals. Im a new reefer and have another tank that’s only a month and half old. Im trying my best to clean these corals up and keep them healthy. I’d like to possibly put them in my other tank.

 

[T-J]

Looks like a dying Duncan coral covered in Vermetid snails (bad guys). Scrape them off and/or fill the tubes with super glue.

 

[MaxTremors]

Looks like sponges (the little tubes coming off the rock on the upper right).