Algae?

[CK Amstutz]

I clean my aquarium and two days later, this is everywhere. Is it algae or something else? My tank has been up over three years and this started about six months ago, along with a yellow green film over glass.

 

[JGT]

Form of algae, probably chrysophytes.

 

[CK Amstutz]

Thank you. I will research that.

 

[CK Amstutz]

Form of algae, probably chrysophytes.

From what I am seeing, Chrysophytes like low calcium. My lfs said my calcium was running high, so I didn’t add any for while. It is in mid to high 400‘s now.