How to Lower Your Nitrate/Nitrite Levels in Your Fish Tank

Do a 30% water change as soon as possible., Lower the amount of food you are giving your fish., Follow the general rule of thumb, which is to have 1 inch (2.5 cm) of adult fish per gallon., Test your water source for nitrate directly if after...

5 Steps 1 min read Medium

Step-by-Step Guide

  1. Step 1: Do a 30% water change as soon as possible.

    In order to maintain a fish tank, you should be doing at least a 25% water change every week.

    When you do a water change, you are removing nitrate-laden water and replacing it with fresh, nitrate-free water.

    Leaving this too long will result in a build-up of nitrate that can harm your fish.
  2. Step 2: Lower the amount of food you are giving your fish.

    Remember that a fish's stomach is around the same size as his eye.

    A little food goes a long way.

    If you are giving fish several different kinds of foods (brine shrimp, blood worms, flakes, etc. ) then make sure the amount is controlled.

    Place the food at feeding times in a place where the fish will actually be able to find and eat it.

    Remove any uneaten food from the tank with a gravel vacuum or clean turkey baster. , Remember that this guideline is only for smaller tropical fish.

    A 12-inch pleco cannot fit into a 12 gallon (45.4 L) tank, and a 10-inch fish has no place in a 30 gallon (113.6 L) tank.

    Use your common sense. , If it is high, then find another water source, and do a water change with it.
  3. Step 3: Follow the general rule of thumb

  4. Step 4: which is to have 1 inch (2.5 cm) of adult fish per gallon.

  5. Step 5: Test your water source for nitrate directly if after previous steps you still have high levels.

Detailed Guide

In order to maintain a fish tank, you should be doing at least a 25% water change every week.

When you do a water change, you are removing nitrate-laden water and replacing it with fresh, nitrate-free water.

Leaving this too long will result in a build-up of nitrate that can harm your fish.

Remember that a fish's stomach is around the same size as his eye.

A little food goes a long way.

If you are giving fish several different kinds of foods (brine shrimp, blood worms, flakes, etc. ) then make sure the amount is controlled.

Place the food at feeding times in a place where the fish will actually be able to find and eat it.

Remove any uneaten food from the tank with a gravel vacuum or clean turkey baster. , Remember that this guideline is only for smaller tropical fish.

A 12-inch pleco cannot fit into a 12 gallon (45.4 L) tank, and a 10-inch fish has no place in a 30 gallon (113.6 L) tank.

Use your common sense. , If it is high, then find another water source, and do a water change with it.

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Nancy Hart

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