(OUT BY .13) ,
when calibrating, have you made sure the temperature of calibrating solution was ok, cause, a lots of devices are sensitive to heat when combined with acidity and it makes a good difference in your ph readings, and I'm also a little confused about the .13 , ...
Explain to me, ...
Have you took the ph after calibration and found a .13 difference from your previous readings prior to calibration?
Or it was calibrated .13 lower or higher than previously...( during calibration)?
Cause a .13 several times × 5.5- 6.0, can almost put you off by a .78 if you don't watch the temperature while calibrating it can push the ph off even further ...
That could be your culprit, instead of been the nutrients been locked up inside the bottle...
You could monitor the ppms uptake of the plant to see what is going on...if the plant is feeding or not , your at what ppms level now?
And are you using co2?
when calibrating, have you made sure the temperature of calibrating solution was ok, cause, a lots of devices are sensitive to heat when combined with acidity and it makes a good difference in your ph readings, and I'm also a little confused about the .13 , ...
Explain to me, ...
Have you took the ph after calibration and found a .13 difference from your previous readings prior to calibration?
Or it was calibrated .13 lower or higher than previously...( during calibration)?
Cause a .13 several times × 5.5- 6.0, can almost put you off by a .78 if you don't watch the temperature while calibrating it can push the ph off even further ...
That could be your culprit, instead of been the nutrients been locked up inside the bottle...
You could monitor the ppms uptake of the plant to see what is going on...if the plant is feeding or not , your at what ppms level now?
And are you using co2?