Oxygen and temperature

Oxygen and temperature

As important as air for breathing!

Oxygen determines not only our life, but also the life of your pond dwellers and even that of the pollutant degrading beneficial bacteria – but this only applies when there is enough oxygen available.

The right oxygen supply for your pond

What do you need to remember?

How does oxygen enter your pond water? As long as the oxygen concentration of our air (21 %) is higher than in the pond water, oxygen (O2) will always diffuse from the air through the water surface into the pond water. The larger the surface, the higher the gas exchange. Wave movement, diffuser stones with air bubbles, waterspouts and waterfalls enlarge the surface and thus increase the oxygen content in the water.

For very deep ponds with plenty of fish the water surface is no longer sufficient for the oxygen supply and needs to be supported by technology (as mentioned above). To solve this problem JBL offers you the JBL PondOxi-Set for strong aeration. In summer especially you need to help your pond animals, as warm water absorbs considerably less oxygen than cold water. Having combatted and killed your algae, you definitely need to ensure there is a strong aeration. The degrading bacteria consume unbelievable amounts of oxygen. This even reaches a point where the lack of oxygen means the bacteria can’t degrade anymore. It is really important to read up a little on the subject of oxygen and to check with a water test.


Quick test to determine the oxygen content in freshwater/marine aquariums and ponds

  • To determine the current oxygen content and as a result indicate whether measures to increase the O2 content need to be taken
from 9,12 €

Oxygen supply in winter

In the cold season the animals gather at the pond bottom which is the warmest place (about 4 °C). If you now mix the water layers using a pump, air stones etc. the pond can continue to freeze and cause problems. An ice cover hinders the gas exchange at the surface. To avoid this an ice preventer in combination with an aeration device is paramount ( JBL PondOxi-Set )!

Oxygen saturation depending on the water temperature

°C mg/l
4 12.7
6 12.1
8 11.5
10 10.9
11 10.7
12 10.4
13 10.2
14 10
15 9.8
16 9.56
17 9.37
18 9.18
19 9
20 8.84
21 8.68
22 8.53
23 8.38
24 8.25
25 8.11
26 7.99
27 7.86
28 7.75
29 7.64
30 7.53
31 7.42
32 7.32

A word about cookies before we continue

The JBL Homepage also uses several types of cookies to provide you with full functionality and many services: We require technical and functional cookies to ensure that everything works when you visit this website. We also use cookies for marketing purposes. This ensures that we recognise you when you visit our extensive site again, that we can measure the success of our campaigns and that the personalisation cookies allow us to address you individually and directly, adapted to your needs - even outside our website. You can determine at any time - even at a later date - which cookies you allow and which you do not allow (more on this under "Change settings").

Are you over 16 years old? Then confirm the use of all cookies with "Noticed" and you are ready to go.

Choose your cookie settings

Technical and functional cookies, so that everything works when you visit our website.
Marketing cookies, so that we recognize you on our pages and can measure the success of our campaigns.