Ammonia is excreted by fish directly into the water, and is also released from the breakdown of solid waste and uneaten food.

To find the ammonia level, test the water with a TetraPond Ammonia kit. Regular testing, especially in new ponds, will prevent damage caused by ammonia poisoning.

It is highly toxic to fish, but is usually removed from the water by the bacteria which live inside the filter. However, in new ponds, or if the filter bacteria are damaged, the ammonia level may become excessive. 

The TetraPond Ammonia kit is a liquid kit, which works by changing the colour of a water sample in relation to the ammonia concentration. To determine the ammonia level, all you need to do is to compare the colour of the sample to the easy-to-read colour chart. 

To test the ammonia level, simply take a sample of pond water in a jug, and then use some of this to wash out the test vial. Then: 
1. fill the vial to the 5ml mark with the water to be tested; 
2. hold bottle 1 upside down and add 14 drops to the vial, close it and shake gently; 
3. hold bottle number 2 upside down, add 7 drops to the vial, close and shake gently; 
4. hold bottle number 3 upside down and add 7 drops to the vial, close and shake gently. Leave the vial for twenty minutes to allow the colour to develop; 
5. Match the colour of the sample to the colour chart in order to obtain the ammonia concentration.

Always read the instructions carefully before use. If ammonia levels are high then you should seek advice as to the underlying cause.  

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