Please help my sump is infested with these white things

[Dan1979e]

I went to do some cleaning in my sump and noticed it’s infested with these white things… they even look to have spikes

 

[TurboTang]

Pineapple sponges - won't hurt a thing. Thin out usually as tank matures

 

[IKD]

Pineapple sponges and spirorbid worms. Both harmless filter feeders.

 

[ISpeakForTheSeas]

Yeah, you've got some sponges, some pineapple sponges (genus Sycon), some spirorbid worms, and some other feather duster worms - all of the above are harmless filter-feeders.

 

[Dan1979e]

Pineapple sponges and spirorbid worms. Both harmless filter feeders.

Ty, The tank is going on a year now… I’ve had pineapple sponges before, but they were round and actually looked more like a pineapple. These look more like worms. That’s where I got a bit creeped out.

 

[TurboTang]

Ty, The tank is going on a year now… I’ve had pineapple sponges before, but they were round and actually looked more like a pineapple. These look more like worms. That’s where I got a bit creeped out.

Once your tank gets really established, get yourself a red flashlight and look around on your sandbed in the middle of the night - I lost some sleep the first time I peeked.