Anyone want to test my ph?

[Teeb]

My ph has been climbing unusually high lately and cant seem to find a cause for it. I'm starting to think my probe is off, even after calibration. Does anyone have a handheld ph meter I can borrow or wants to come stick in my tank for reference?

[Big_Pun]

whats are your readings???

[Teeb]

8.3 at night, climbing to 8.6 during the day.

[mkengr45]

when you recalibrated, was the calibration fluid the same temperature as your tank water? You using a DA probe? Dosing changes? Kalk in ATO? just grasping for reasons in may be so friggin high....I am sure you have already gone through this list of thoughts...

Randy

[Teeb]

Didn't check temp when calibrated. Yeah, it's the DA probe. Don't dose, not using kalk. It went down when I did a water change and slowly climbed back up. I don't understand it.

[mbrang00]

I cal my prob in a zip lock baggie that dont leak that is dipped in the water so the temp of the solution is the same temp as the water. It does make a diffrence.

[Teeb]

Just recalled yesterday with temp adjusted solution. It was about .2 high. Hasn't gone about 8.4 since yesterday, so maybe that was it. I'll check after the lights have been kicking for a few days.