Brown Algae, Phaeophytas

Causes:
- Low light/photoperiod.
- Excess phosphates and / or silicates.
- Unstable aquariums (newly assembled)
- Alcaline water favors this algae.
Solution:
- Frequent water changes.
- Increasing light intensity and photoperiod (10-14 hours).
- Some snails help (planorbis).
- Mechanical removal of algae.