Purpose And Benefits:
Koi and goldfish excrete ammonia from their gills. Urine and solid fish waste breakdown into ammonia. Decaying plants and algae also release ammonia into the pond. Uneaten fish food will also decompose and release ammonia into the pond. Ammonia is converted to nitrite by nitrifying bacteria in (biological filtration). Nitrite is very toxic to fish. Nitrite is absorbed by the fish Once in the bloodstream nitrite binds to hemoglobin and prevents the blood from carrying oxygen. This prevents normal gas exchange across the gills. Fish will become weak and susceptible to a variety of diseases. Eventually fish will die from oxygen starvation.

It is impossible to see or smell nitrite in pond water. The only way to know if ammonia is present in the pond is with a nitrite test kit. Use the Pond Care Liquid Nitrite Test Kit to accurately measure the nitrite level in ponds and water gardens.