How to Remove Nitrogen From Water for Fish Ponds

High levels of nitrogen in a pond can be extremely toxic to fish and the problem must be controlled as soon as possible. Nitrogen, when combined with hydrogen, creates ammonia, which is hazardous to your pond. Nitrogen encourages algae growth in your pond. A large amount of algae in your pond can create bacteria that are unhealthy for your fish and water. The best way to make sure that there is not too much nitrogen in your pond is to maintain the pond by keeping your filter clean to help remove algae.

Fish net
Baby pool
Water pump
Large bucket
Biological filter

Instructions

- 1
  Remove all fish in your pond using a net. Transfer the fish to small baby pool full of water.
- 2
  Pump out all of the water from the pond using a water pump or large bucket. Once all the water is removed, use a net or your hand to remove all algae that remains at the bottom of the pond. Make sure that you wear rubber gloves when removing the algae.
- 3
  Install a new filter or clean out the filter you have before refilling your pond with fresh water. Consider installing a biological filter or stronger filter that will help to remove bacteria if the one you were using before didn't work well enough.
- 4
  Add new water to your pond and continue to maintain it well by removing any algae with a fish net. The quicker you remove algae and other waste from the pond then the healthier your pond will be and nitrogen will continue to be removed more easily.
- 5
  Add the fish back to pond using the fish net. Make sure the water is at the correct temperature for the fish and that the filter is turned back on before adding them.

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