Algae?
- Thread starter warvillian
- Start date
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Krypt
Aquarium Advice FINatic
Some of the light spots look like coralline algae, but the big purple blob on the glass is actually cyano bacteria (bad stuff).
hackteck
Aquarium Advice Addict
- Joined
- Feb 24, 2005
- Messages
- 2,639
yea coralline usually grows in spots
warvillian
Aquarium Advice Activist
so scrape it off then, ive only seen red cyano on my substrate ive never seen purple cyano on glass
