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Dissolved oxygen and water temperature...

The warmer the water the more air you need...

Nigel Caddock NI

There is a fundamental connection between water temperature and DO saturation. Other factors of course affect it too, notably height above sea level, but I believe its vital to understand that as water temperatures rise its ability to retain oxygen falls. Don't take risks - measure D.O. then use that information to manage the oxygen levels in your system! Dissolved oxygen is expressed in milligrams per litre, and based on long experience - all gained the hard way - we strongly suggest you use our Koi Safe DO levels in the end column as your guide.

Water Temperature (F/C)	Saturation (mg/l)	Koi Safe DO Levels
0/32	14.6	10.9
5/41	12.8	9.5
10/50	11.3	8.5
12/53	10.7	8.0
15/59	10.1	7.6
18/64	9.4	7.0
20/68	9.1	6.8
23/73	8.6	6.5
25/77	8.3	6.2
28/82	7.8	5.9
30/86	7.6	5.7
32/89	7.3	5.5

The warmer the water the less the dissolved oxygen...

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