PH probe quality

[ricardomunera]

I’m looking at putting together a ph probe with reef pi and I’m seeing a lot of different prices and was wondering how “cheap” you can go with the probe and circuit?for now it’s just going to be for monitoring but I also would like to fiddle with a alk tester so I’d imagine that one would have to be pretty accurate

For the basic tank monitoring and graphing would I be able to use something like this?

 

[Nano_Man]

It's not the price of the probe it's how accurate it is. You would have to calibrate it then see how accurate it is to the other methods for taking reading and see how apart they are

 

[ricardomunera]

It's not the price of the probe it's how accurate it is. You would have to calibrate it then see how accurate it is to the other methods for taking reading and see how apart they are

I realize that the accuracy would be important. This one claims +/- .3. Would I have to worry about that claim being false with a lower priced one. And how accurate would I need it to be?

 

[ricardomunera]

It's not the price of the probe it's how accurate it is. You would have to calibrate it then see how accurate it is to the other methods for taking reading and see how apart they are

I realize that the accuracy would be important. This one claims +/- .3. Would I have to worry about that claim being false with a lower priced one. And how accurate would I need it to be?

Also from my understanding the accuracy would mainly come from the circuit?

 

[Uncle99]

Waste of money and time.
Even the most expensive probes give false reports over time sending us into a chase that’s untrue.

After learning that lesson, I’ve not measured PH in a decade.

It’s ok to employ any or all those things which may increase PH like water movement, outside air to skimmer, macro algae, CO2 scrub, but measure it is not necessary in normal reef tank settings.