Why does this happen and how do I prevent it?
Nitrate is a naturally occurring chemical in your aquarium and is created by the breakdown of Nitrite by bacteria in your biological filter as part of the Nitrogen cycle. Nitrate can also be introduced into an aquarium through the tap water you use.
To help prevent high nitrate:
- Introduce plants to your aquarium which will use the nitrate as a food source (this will also control algae blooms which can occur with high nitrate levels)
- Do regular water changes, testing your tap water’s nitrate levels before introducing it to our aquarium. If you’re tap water is high in nitrates you may need to start using conditioned RO water in your aquarium.