My ph and salinity were reading low on my apex. I tested salinity with my calibrated refractometer and it measured correctly @ 35, apex showed 31. Ph was reading 7. I ordered calibration packets thinking that was the issue. Calibrated salinity without issue. The ph read way off. It settled on 300 for the 7.0 solution and q250 for the 10.0
Now the salinity in the tank reads 19, shook out the bubbles
The ph reads 6.8 but isn't accurate when reading the calibration solutions.
Do I have a couple of bad probes?
Now the salinity in the tank reads 19, shook out the bubbles
The ph reads 6.8 but isn't accurate when reading the calibration solutions.
Do I have a couple of bad probes?