So, what is this?

kevinmichael77

Guru Class Expert
Oct 5, 2012
385
7
18
Wisconsin
Tank has been up for just over a month and now this algae is cropped up. Tests seem fine and c02 has been consistent with my drop checkers reading a nice lime green every day. The only thing I changed was moving the light closer because my par readings were low when I checked em. I'd love some help/advice if anyone has experience with this type of algae!

Thanks and happy thanksgiving!
 

dutchy

Plant Guru Team
Lifetime Member
Jul 6, 2009
2,280
5
36
64
The Netherlands
Looks like Rhizoclonium. Remove all algae manually, do a 90% waterchange afterwards and clean your filter well. Go back with the light to the intensity you had before.

If it keeps coming back after this, you could try a treatment with Algaefix to kill off the little bits.