Mystery Algae

[domrahe7]

Hello! Over the last two months my tank has experienced an odd blooming of an algae I am unsure of. I established the tank in august of this year. While I thought they were diatoms at first due to the orangish/brown color, they don’t wipe off easily at all like diatoms do. Just wanna make sure this stuff isn’t gonna hurt my tank inhabitants. Water quality is also where it needs to be so I am very confused

 

[Baronen]

I brush that off my glass twice a week. It’s just regular slime/algae buildup

 

[Pvtgloss]

How old is the tank?

 

[domrahe7]

How old is the tank?

About three months old

 

[domrahe7]

I brush that off my glass twice a week. It’s just regular slime/algae buildup

See in the past with regular diatoms I’ve been able too, but this stuff does not come off easily at all. I have to put so much elbow grease into it just to get a little but of it off

 

[Reefkeepers Archive]

Just diatoms/regular algae

 

[Reefkeepers Archive]

See in the past with regular diatoms I’ve been able too, but this stuff does not come off easily at all. I have to put so much elbow grease into it just to get a little but of it off

Ohh, calcareous algae.

 

[domrahe7]

Ohh, calcareous algae.

Okay I was thinking this as well but wasn’t sure because it wasn’t a super vibrant orange. Should I be worried about how much there is?

 

[Reefkeepers Archive]

Okay I was thinking this as well but wasn’t sure because it wasn’t a super vibrant orange. Should I be worried about how much there is?

No, completely harmless. Never heard of orange calcareous algae, are you thinking of coraline algae?