Hi everyone,
I am having some issues with my PH probe that came with my Profilux 3ex Mega Set which was purchased about 3 months ago. I have tried to contact GHL via email but I am not sure if that was the correct way to get help.
My PH probe keeps fluctuating up to ridiculous numbers of 10+ PH and down to 7PH.
I have calibrated the probe following GHL's instructions after calibration liquid was floating in tank water for 24 hours. Did 3x calibration over 3 consecutive days... and every day I got a completely different ADC value;
Original figure: ADC (7ph) 419
ADC (9ph) 261
Day 1: ADC (7ph) 338
ADC (9ph) 214
Day 2: ADC (7ph) 378
ADC (9ph) 247
Day 3: ADC (7ph) 395
ADC (9ph) 263
I am really not sure what the problem is? Possibly a faulty probe? I also checked for electrical interference and disconnected everything from the power board one by one and there was no change.
Any help or information would be much appreciated.
Thanks
Joe
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