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The DO probes come pre-calibrated from the factory and do not require a calibration fluid for use.
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Controlling your tanks DO (Dissolved Oxygen) can be done with either air pumps, or powerheads allowing for gas exchange. Needless to say, your fish will consume oxygen when they respirate, but a little less known is when detritus and dissolved organics are breaking down, oxygen will be directly consumed in the biological process which could quickly lead to low available dissolved oxygen in the water. Low levels make it very hard for fish to breathe and could result in suffocation.
Combating low DO is relatively easy with the DO probe and the Vertex Cerebra Controller. By setting a target value, you can have powerheads or air stones at the ready to turn on when levels get too low and turn back off when the Oxygen level settles back.
We highly recommend DO probes on Fish Only and FOWLR tanks.
Dissolved Oxygen Saturation Table
As an example, a tank with a salinity of 35ppt and a temperature of 78.8 degrees Fahrenheit can have a maximum dissolved oxygen amount of 6.64ppm. A freshwater tank with a salinity of 5ppt at 75.2 degrees can dissolve 8.16ppm of oxygen at 100% saturation. On average dissolved oxygen (DO) rates will be around 70%. We suggest maintaining a DO level between 4.5-7ppm, as stress signs can be seen anywhere below 4ppm and fatalities can start to happen below 3ppm.
Note: Cerebra Controller sold separately
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