- Joined
- May 7, 2019
- Messages
- 111
- Reaction score
- 79
This alga started appearing on the front glass in my tank about 1-2 months ago. It's green and each colony is very round - see the two colonies indicated in the picture below. I get about 3-5 colonies of this alga every week and clean them off during my weekly water change, but they always come back. Also, they're very crusty and hard to scrape off the glass. Any ideas on what type of alga this might be?