White spots on back of aquarium

[TCseh]

I thought it was coraline. The spots haven't grown or disappeared. Only more showed up.

It's hard to get a better picture than this. They are literally like white peices of sand on the back of my tank. Thats it.

 

[vetteguy53081]

I thought it was coraline. The spots haven't grown or disappeared. Only more showed up.

It's hard to get a better picture than this. They are literally like white peices of sand on the back of my tank. Thats it.

View attachment 3168321

These appear to be spirobid worms which feed on algaes on glass. They can appear in numbers and easy to scrape off into a net with an old credit card or similar and discard

 

[TCseh]

These appear to be spirobid worms which feed on algaes on glass. They can appear in numbers and easy to scrape off into a net with an old credit card or similar and discard

Are they good or bad for the tank?

 

[Lbrdsoxfan]

Are they good or bad for the tank?

Harmless.

 

[TCseh]

Are they good or bad for the tank?

All my fish died from brook recently. I was planning on getting a quarantined leopard wrasse. Would he feed on them?

 

[flyingscampi]

Spirorbis, not bad for the tank but they will cover everything if you don't scrape them off.

 

[TCseh]

Spirorbis, not bad for the tank but they will cover everything if you don't scrape them off.

View attachment 3168325

Will a wrasse or any other fish eat them?

 

[flyingscampi]

Will a wrasse or any other fish eat them?

This thread has some more info

Spirorbis - What will eat them?

These things aren't so bad, until everything is covered with them. Crabs don't touch them. Snails don't touch them, even humongous turbos slither over them and leave them behind. They don't seem to cause any ill-effects, only an eyesore. What critter wants a spirorbis buffet? Come see me.

www.reef2reef.com