No photo yet
Sign in to submit the first photo
Green Spot Algae
Coleochaete orbicularis
Plantae›Chlorophyta›Chlorophyceae›Coleochaetaceae
📍 Worldwide in freshwater
Hard, dark green circles on glass and slow-growing plant leaves — familiar to virtually every planted tank keeper. Caused by low phosphate (counterintuitively) and high light. Nerite snails are the most effective control. A small amount is considered normal and harmless.
Community Photos
0 photosPhotos are added when members log a tank with this species and upload a photo in their tank journal. Add your own tank to contribute.
No photos yet — add a tank with Green Spot Algae to be the first!
Sign in to vote.
Tips from the community 💡
0 tipsReal experiences, care advice, and keeper notes. Finn learns from these too.
Sign in to share your experience.
No community tips yet — be the first to share your knowledge!
Quick Facts
- role
- nuisance / normal
- cause
- low phosphate, high light on glass
- control
- Nerite snails, raise phosphate slightly, reduce light