Chiller and APEX pH problems

[DallasSVT]

How far does a chiller have to be from the APEX base unit and pH Probe so that you wont get any interference on the pH readings?

Thanks

Dallas

 

[Deleted member 143833]

What are you seeing to suspect interference? I would expect 12" or so would be good (that is how far I had to move my electronic ballasts).

 

[DallasSVT]

What are you seeing to suspect interference? I would expect 12" or so would be good (that is how far I had to move my electronic ballasts).

Just saw a drop in pH of about .2 overnight once chiller was online. pH has been stable fro past 5 months. And I could not figure ou what else it could be, unless bringing my TEMP down to 81.5 from 84 could have caused a change in pH!


Dallas

 

[Deleted member 143833]

Try this; if you turn off the chiller does the PH change? When the chiller is running (or not) is there any change? If not then I suspect the PH reading is just fine.

 

[DallasSVT]

No changes with chiller off or on. I think that lowering the Temp of the tank from 84 to 81.5 just caused the pH to lower as well.

It has since stabilized at around 8.2

Thanks,

Dallas