have you calibrated and cleaned your ph probe recently?
Yes i do , 2 of them the pump and the mixer thaks alot to all the ones that help i will try to check if there is any wire conducting electricity thanks alot it makes total sense
Your PH meter is out of calibration , if you read the instructions on the blue lab PH meter for example it will tell you, if it dries it dies , in other words you must always keep the probe wet once you start using it, if it dries , it dies, most meters are the same, they must be kept wet,
That's not quite right. If you plan not to use your pH pen for some time you can let it dry right out but you must soak it in storage sol'n or equivalent for a minimum of 24 hours before putting the batteries back in and using. First use should be a 2 point calibration, 7 and 4. If it won't calibrate then turn it off and let it soak for another day. I retired mine for 2 years and needed to use it a few months ago and it still worked fine after soaking for 2 days. It's been sitting with storage sol'n in the cap since the last use. Do not soak in RO or distilled water as that will destroy the probe for sure. Will leach the salts out of the glass probe.
I do the same thing as you...my Bluelab Combo meter is used more like a 'monitor', being left in my res 100% of the time except for measuring my veggy tent's buckets and cleaning/calibrating. I did buy the bluelab PH/PPM Cleaning and Calibration kit and it was worth it. I think that when left submerged in nute solution 24/7 it probably does increase the frequency of needed cleanings and calibrations, but thus far I do just fine with 1 cleaning and 2 point calibration (4&7) every 1-2 months.
