Anyone use Pinpoint Ph Monitor? Thoughts?

[LesPoissons]

Hey all,
Got a pinpoint ph monitor for Xmas. After calibration, it reads my ph about 7.92. My salifert test (based on color chart) I’ve been using forever reads (what id call) a consistent 8.2-8.3. Thoughts on which is more reliable?? The color chart seems pretty subjective on the test kit but I’m surprised I’m that far off. I have Sps and lps, nems, fish, inverts etc in a 220 mixed reef. Coral growth has been slow as Im still learning how to reef better- which is why I’m trying to do a little bit of number chasing to get things around the “correct” sustainable level. Would you make any ph adjustments based on the ph monitor reading?
Thank you!!!

 

[EmdeReef]

Calibrated ph probe will usually be more accurate. At your range of 7.9 vs 8.2 color test I would go with the ph probe. If your ph tends to stay around 7.9 I wouldn’t bother with it, can always add a co2 scrubber but stay away from any chemicals unless you want to raise alkalinity.

You can always test the ph probe by checking against a calibration solution.

 

[AdamNC]

Get yourself some Milwaukee pH 7 and pH 10 calibration solution and test the Pinpoint. That’s what I used quarterly to test and recalibrate my Apex.

 

[LesPoissons]

I have calibration solution for 4, 7 and 10- it’s just pretty minute adjustments that seem to change between each calibration. It doesn’t need to be super exact, but just wanted some assurances that it’s trustworthy I guess. my alk always needs raised- I dose regularly- so I’m just trying to get the new equipment to give me the right general parameters so I can stabilize dosing. Moving from text kits to ph monitors and Hanna checkers... I’m starting to feel like a grown up reefer now!!!