Another ID please

[reefin_with_the_fam]

This is growing all over my sump glass. Looks like tiny feather dusters almost

 

[unitedaf]

I would like to know too

 

[35ppt]

Hydroids

 

[vetteguy53081]

Typical slime, algae, detrious, pods droids and even thread for sponge. Simply take a clean sponge and wipe wall clean. If stubborn, use edge of an old credit card. What you see is a colony of hydroids. Use credit card for removal
fenbendazole will also rid of them.

 

[reefin_with_the_fam]

Typical slime, algae, detrious, pods droids and even thread for sponge. Simply take a clean sponge and wipe wall clean. If stubborn, use edge of an old credit card. What you see is a colony of hydroids. Use credit card for removal
fenbendazole will also rid of them.

Thanks! Are these the bad kind I’ve read about?

 

[vetteguy53081]

Thanks! Are these the bad kind I’ve read about?

More of a populated nuisance. Manual removal is first defense. Generally starving them is key but hard to accomplish in a sump, which also indicates nutrients in sump for them possibly from Overfeeding.
If handled, they may sting although not common to hear of such.