Any idea what this is please.

[Jimbhoy13]

Hopefully nothing to worry about.

 

[Double monti 61]

Is it on the rock or the glass?

 

[Jekyl]

Looks like coraline growing on the glass or snail eggs

 

[Jimbhoy13]

It’s on the glass. No snails in tank.

 

[Jekyl]

It's coraline then. Get some CuC too. I can see plenty of food for them

 

[Rmckoy]

Try scrubbing. It with a mag float

Coralline doesn’t come off easy ...

 

[Jimbhoy13]

Thank you all for your advice. I was curious because I hadn’t seen it before and I’d just bought 8 frags (which I dipped)

 

[vetteguy53081]

Coraline- and to verify. use the edge of an old credit card and scrape away. Should fall apart and dissipate