White fluffy tubes in sump?

[Remzee]

Hi there!

Just started my first saltwater tank about 6 months ago, it's a 90gal Reef setup with a sump. Everything is going well, but the last couple weeks I have noticed weird white, fluffy tubes growing like crazy in my sump. They do no retract if I poke them.

I have attached some pictures. They are pretty small, I'd guess about 6-10mm. Most are smooth tubes with feathery puffs on top, some have a little fluff growing on the sides.

Any help you could provide is greatly appreciated!

 

[ecksreef]

Pineapple sponges. I had an outbreak about the same time. They are harmless filter feeders and will disappear on their own. Or at least reduce a lot.

 

[SonRK]

I had A LOT of these about 3-4 months after I put my fish in my 30L tank. I like scraped them off and siphoned a lot of them during a water change. I may find 1 or 2 now, but definitely not a lot as I used to.

 

[mcgyvr]

yep.. pineapple sponge.. With a new tank a few months in they seem to go crazy then just calm down and come and go.

 

[Zer0.]

I'm about 5-6 months into my tank as well, and have a ton of these in my sump and my overflows.

As others said, I wouldn't worry about them.

 

[wcarterh]

More food=more pineapple sponges. They love overflows.