Koi Pond Oxygen Saturation: What Percentage Is Safe?
By KoiQuanta Editorial Team|
Koi experience stress when oxygen saturation drops below 80% even if the mg/L reading appears adequate due to warm water temperature. This distinction between mg/L readings and percent saturation is one that most hobbyists don't fully understand, and it explains why a pond reading 7 mg/L of dissolved oxygen in August can still have stressed fish.
Temperature-adjusted DO saturation calculation shows true pond oxygen status relative to the maximum possible at your current water temperature.
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