Oxygen (O2)
Oxygen is vital to pond inhabitants. Fish, plants, and even the good bacteria that break down organic waste use oxygen. Therefore, it is crucial that the oxygen level in pond water is maintained at an optimum level. Sometimes nature needs your help, through aeration and other good pond management practices, to make this possible.
How water and oxygen mix?
The key to maintaining sufficient dissolved oxygen content in your pond is to understand the basic relationship between water and oxygen. Oxygen is introduced into pond water through two primary ways:
Surface exchange
Encourage proper gas exchange by keeping an area of open water. This open area should be free of vegetation or ice so surface water is exposed to fresh air. Mixing – Water turbulence of any kind, regardless of how it’s generated, significantly increases gas exchange. The fastest, easiest way to raise the oxygen level in your pond is with an aerator, fountain, or waterfall. Three key factors that affect pond oxygen levels:
Temperature
Warm water loses its capacity to hold onto oxygen, particularly at temperatures above 85 degrees fahrenheit. Warm water combined with poor water circulation can create pockets of oxygen-depleted water harmful to pond inhabitants. Biological load – Simply put, more pond inhabitants mean greater demand for oxygen. Without proper aeration, heavily stocked ponds can deplete the existing oxygen supply.
Water clarity
Dark, murky or turbid water can limit the ability of plants to photosynthesize and generate oxygen. Maintain clear water for healthy plant growth. Test, don’t guess.
All too often, pond keepers disregard this vital water parameter until they witness oxygen-deprived fish, gasping at the surface. Regular testing for dissolved oxygen content in your pond is highly recommended, especially during periods of warm weather. The TetraTest O2 test kit is designed to accurately measure levels in your pond and the Deluxe Laborett contains all major water tests you need for your pond.
It is not difficult to provide all the O2 your fish will ever need, and to keep your pond healthy, clean and beautiful.
