Reef nutrition

High Ph

Ayman

Supporting Member
Any negative effect on high Ph, been getting high Ph since I switched my two Part.


Screenshot 2025-07-23 at 10.30.17 AM.png
 
Some have this problem of high PH, even if your actual values might not be 100% correct. I believe even Kenny showed similar charts previously.

High PH is as undesirable as low PH, mainly due to increased precipitation of CA and decreased stability of traces overall.

If inaccurate probe reading is ruled out, I would look for the reason for the high PH. Given the current weather and possibly low CO2 in your house, I assume your alkalinity is higher than it needs to be. What switch of your two part did you make? What is your alkalinity level?
 
Thank you all for your input. A simple recalibration solved the issue—it was significantly off before the drift—but now everything is accurate again. I’ve learned that recalibrating every six months is the optimal schedule going forward.
 

Attachments

  • Screenshot 2025-07-25 at 8.49.06 AM.png
    Screenshot 2025-07-25 at 8.49.06 AM.png
    22.1 KB · Views: 0
Thank you all for your input. A simple recalibration solved the issue—it was significantly off before the drift—but now everything is accurate again. I’ve learned that recalibrating every six months is the optimal schedule going forward.
I didn't want to introduce too much science into this thread, but 8.6 PH is practically impossible without sky high alk (like 20+) or some other major manipulation of Co2 levels inside the tank.

So this doesn't surprise me :) glad you figured it out.
 
Back
Top