Ammonia is excreted by fish directly into the water and is also released from the breakdown of solid waste and uneaten food. Ammonia is highly toxic to fish but is usually removed from the water by the bacteria which live inside the filter. However in new tanks or if the filter bacteria are damaged the ammonia level may become toxic. The only way to know what the ammonia level is is by testing it with a TetraTest Ammonia kit. Regular testing especially in new aquariums will prevent damage caused by ammonia poisoning.

How it Works
The TetraTest Ammonia kit is a liquid kit which works by changing the colour of a water sample in relation to the ammonia concentration. You simply need to compare the colour of the sample to the easytoread colour chart in order to determine the ammonia level.