Green water is a symptom of nutrient overload in an aquarium, and usually result when nitrates and phosphates from fish waste build up, combined with some strong illumination, such as sunlight from a window. Regular water changes and proper feeding techniques, combined with appropriate stocking levels in the aquarium will prevent this common problem. If the problem persists, there are many products available to help kill the algae, and remove the nutrients.
Articles in this section
- What is the nitrogen cycle?
- How do I safely clean a glass aquarium before setting it up?
- Should I rinse the gravel before adding it to the aquarium?
- I see a hard, whitish build-up on the glass and equipment. What is it and how do I remove it?
- When can I add fish to my new aquarium?
- What types of fish should I add to my aquarium?
- My water is cloudy. How can I clear the water?
- My water is green!?
- My water has a very bad smell to it. How can I eliminate the smell?
- Why should I test the water in my aquarium?