API Ammonia Test Kit
A kit for determining the level of ammonia - the #1 killer of tropical and pond fish. Ammonia is a toxic chemical being constantly produced in the pond from fish waste and urine, uneaten fish food, and decaying plants and dead insects.
Features:
You can use rainwater to fill your pond, but keep in mind that it is very soft water. If you primarily use rainwater, be sure to check your pH regularly because it could become too low and cause serous problems.
