ph probe (1 Viewer)

[Nickz]

So it appears one of my apex ph probes finally died, it reads ph of 8.5-8.6, if I put the probe from my other system in that tank it reads a more normal 7.9-8.0.

Having never needed to replace one before, am I better off going with the apex lab grade probe or is the brs lab grade just as good or is there something better? I can't complain as this is the original standard ph probe that came with the apex lite 3.5 years ago.

 

[David Grigor]

For our purposes, it doesn't really matter much. BRS one is fine to use.

So you cleaned the tip well and tried to calibrate it ? It could be electrical interference causing the drastic difference. If you put some tank water in a cup. Move the cup so the cords are as far away from all other cords as possible does the reading change ?

If your around the 18month - 2year mark its probably time for a new one anyways.

 

[Nickz]

It was cleaned and calibrated in Nov, I haven't tried moving out somewhere else yet.

 

[marty9876]

Waiting for a BRS sale is generally my probe plan,