
Ammonia produced from fish waste & urine, uneaten fish food, decaying plants, and dead insects. In a large amount of ammonia will cause Koi Fish death. High concentration Ammonia in the Pond water will cause the water to be green. So koi keeper needs to detect the ammonia disolved in the water every time with Ammonia Test Kit. An ammonia test kit is considered to be a requirement for all pond keepers. If the ammonia test result was detected in high level , cleaning water needs to be done soon. Cleaning water from ammonia can do by change water partially or good filtration system.