Why does this happen and how do I prevent it?
Nitrite is a naturally occurring chemical in your aquarium and is created through the breakdown of ammonia by bacteria in your biological filter as part of the Nitrogen cycle. The main causes of high nitrite are:
- immature or damaged biological filter
- over stocking
- over feeding
To prevent high nitrite levels:
- Complete regular water changes of up to 30% and test your water
- increase aeration
- maintain a healthy filter (if you need to clean elements of the filter use water from the aquarium as tap water will damage the bacteria that remove Nitrite)
What treatment should I use?