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Oxygen Tests

Oxygen Tests

Dissolved Oxygen in your Koi Pond is important. Koi breathe by pumping water over their gills to extract essential oxygen, which is invisibly dissolved in the pond water.

Fortunately, compared to other fish species, Koi do not require an especially high level of dissolved oxygen (DO) which makes them relatively undemanding in this area. Even when, through whatever reason, DO does fall below a koi's minimum requirement, they can adapt by coming to the surface to gulp in air as a short-term survival strategy. However, this is extremely stressful for fish and if you are witness to such an extreme change in behavior the alarm bells should start ringing.

How Koi Respond to Oxygen Levels in Pond Water

Oxygen Level

Typical Koi Response

3 ppmKoi begin to die
5 ppmKoi barely survive
7 ppmKoi will live
8 ppmKoi will do well
11 ppmKoi do wonderfully
YSI 550A Dissolved Oxygen Meter

YSI 550A Dissolved Oxygen Meter

The YSI 550A Dissolved Oxygen Meter measures temperaturs and dissolved oxygen simultaneously using highly accurate thermistors and YSI's proven polarographic technology for dissolved oxygen. The...
YSI Economy Oxygen Meter

YSI Economy Oxygen Meter

The YSI DO200 is designed for quick, accurate oxygen and temperature readings!Watertight housingAutomatic temperature compensationManual salinity compensationLow battery indicatorScrew on cap...
LaMotte Dissolved Oxygen Test

LaMotte Dissolved Oxygen Test

This kit provides an inexpensive alternative to a dissolved oxygen meter. Testing takes 5 minutes. 0 to 10 mg/liter. Note: These tests may not give accurate results when used with...