How do you reduce nitrates in a freshwater aquarium?

Answer 1

If you have nitrites in your tank, it means that it is not fully cycled. You should perform regular weekly maintenance on your tank which includes changing at least 50% of the water each time along with removing waste and debris.

When adding the new water back to the tank, ensure that you add the recommended dosage of water conditioner such as Prime or Amquel+

Answer 2

The easiest way to lower nitrates is to regular water changes including a gravel vacuum. Thes should be about 15-20% of the tanks volume on a fortnighly basis (weekly is better).

Having alot of plants will help a bit as the plants use nitrate as a fertiliser, but it won't get you away from the water changes.

Nitrate is formed by the breakdown of organic waste into ammonia, which is converted to nitrite which is then converted to nitrate by bacteria. The fact you have nitrate is a good sign as it means all steps in the cycle are complete, but don't let it build up too high. Whilst less toxic than ammonia or nitrite, it will affect the fish if it builds too high.

Answer 3

Nitrates can be reduced in two main ways in a freshwater aquarium. The first is the most simple; remove and replace aquarium water with fresh water. This dilutes and removes the nitrate. The second method is to use live plants to absorb the nitrates, but this is more difficult as you must then also care for aquatic plants.

Answer 4

Change the filters if you have them the carbon in them is only good for about 2 -3 weeks like it says on thecontainer. Also feed your fish every other day.