White things on glass and rocks

[Tjk]

Any one have any ideas what these white things are on my glass and rock? They don’t seem to be moving. Noticed them yesterday in my 125 gallon , but there all over in my 15 gallon. Hard to get a good picture since there so small. Thanks!

 

[Crabs McJones]

Spirorbid worms. Filter feeders. Welcome to R2R!

 

[stanleo]

spirorbid worms. Harmless and usually fade as the tank matures. Just scrape them off the glass if they are obstructing your view. Otherwise, you can leave them be.

 

[Tjk]

Thanks! Will anything eat them?

 

[Crabs McJones]

Thanks! Will anything eat them?

Unfortunately no. All you can do is regulate their population by not allowing alot of extra food to be in the tank.

 

[Tjk]

Know what these things are also? On my 125. By the way the 125 is over a month old ( I believe its done cycling ammonia, nitrite, nitrate all 0) and just transferring things over from my 40.

 

[Crabs McJones]

Know what these things are also? On my 125. By the way the 125 is over a month old ( I believe its done cycling ammonia, nitrite, nitrate all 0) and just transferring things over from my 40.

Medusae hydroids

 

[Tjk]

Are they something to worry about? Never seen in my 40.

 

[Crabs McJones]

Are they something to worry about? Never seen in my 40.

Usually no. They die out on their own in most cases

 

[Tjk]

Thanks!