Is this Corraline?

[Campbell Bradley]

So I'm currently on a holiday and have people taking care of my tank and got sent this photo. It's around 5 months old and it gets this crusty splotches of growth on the glass when left for a while . I was just wondering wether this was corraline algae or something I should be worrying about. But this was a second hand tank and a few hermits have corraline growing on their shells at the moment.
And yes the hammer is about to get moved away from that goniopora.
Thanks for the help.

 

[lmfbs]

It looks like some sort of biofilm to me. Corraline is generally opaque and coloured (purple/pink/sometimes green)

 

[Campbell Bradley]

It looks like some sort of biofilm to me. Corraline is generally opaque and coloured (purple/pink/sometimes green)

Thankyou, is there any down side to biofilm or is it just ugly?

 

[Townes_Van_Camp]

Thankyou, is there any down side to biofilm or is it just ugly?

Just scrape it off.

 

[Rmckoy]

Thankyou, is there any down side to biofilm or is it just ugly?

Some fish will pick and graze at it leaving kiss marks on the glass but generally .. it needs to be scrubbed or scraped off

 

[Campbell Bradley]

Some fish will pick and graze at it leaving kiss marks on the glass but generally .. it needs to be scrubbed or scraped off

Thankyou, going to get people to go over it with a metal scraper tommorow.

 

[Townes_Van_Camp]

Thankyou, going to get people to go over it with a metal scraper tommorow.

You can leave it there until you get home. It hurts nothing,