dwc ec/ppm readings

Knottydread

Knottydread

Member
Does having my air stone on while I take readings effect the outcome. Or should I turn it off to check the readings.
 
Sativied

Sativied

Well-Known Member
It does if you measure in a very bubbly area yes, it won't give a steady reading if that's the case. You can obviously test it easily yourself, just turn it off and measure and compare to value with airpump on.
 
Knottydread

Knottydread

Member
Sativied said:
It does if you measure in a very bubbly area yes, it won't give a steady reading if that's the case. You can obviously test it easily yourself, just turn it off and measure and compare to value with airpump on.
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Lol ya I went and tested it my self. I just wasn't sure if the dissolved oxygen has an effect on ppm but I guess its more of the water moving around. Thanks!
 
Sativied

Sativied

Well-Known Member
It's just that with large bubbles the contacts of the meters aren't constantly surrounded by the solution you measure. I only get that if I measure directly above an airstone.
 
firsttimeARE

firsttimeARE

Well-Known Member
I find the bubbling helps mix the nutes or ph up and down quicker.I leave bubblea going but i.monitor in a calm spot because it will throw readings off as others have stated.
 
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