Instructions
Test the fish tank water. You need to know exactly how high the nitrite level is before you begin to lower it. Buy a water testing kit at your local fish store that will test the nitrite level.
Research the appropriate nitrite level for your specific fish. The level will vary depending on the type of tank and the type of fish. Certain fish can thrive in a nitrite level of 20 ppm, while other fish require a lower level.
Clean the tank. A dirty tank that has plenty of fish waste products has a higher nitrite level than a clean fish tank. It's important to keep the tank clean in order to maintain a low nitrite level.
Change the tank water. If cleaning the tank doesn't work, then you might have to change the water in the tank to reduce the nitrite levels. Try removing ¼ of the water from the tank and replacing it with clean water. This will serve to reduce the nitrite levels significantly. If removing ¼ of the water is not enough, repeat the process until you achieve the right nitrite level.
Keep the fish lean and mean. Over feeding fish is a common problem. It's not healthy for the fish nor is it healthy for the tank. The more food a fish eats, the more it will poop. The more fish poop in the water, the higher the nitrite level.
Place live plants in the tank. Live plants love nitrites. Introducing live plants to the tank will help to lower the nitrite level in the tank.
How to Get Lower Nitrite Levels in a Fish Tank
The environment in a fish tank is a very delicate ecosystem. You have to find the right balance between having enough and having too much nitrite in the tank. Too much nitrite is bad for the fish. Knowing the steps to take to lower the nitire levels means life or death to your fish.