I set up my Red Sea Reefer 250 few months ago and added an Apex about 6 weeks ago. My Ph is fairly low, around 7.6 at night and 7.8 during the day . We are in a brand new built house so I was assuming this was one reason, I actually ordered a CO2 scrubber from BRS this weekend to try and push it up over 8 during the day. I had someone suggest I double check the Apex reading so I purchased a PH test kit. The test kit showed 8.2 yesterday afternoon and the Apex showed 7.9. This is a brand new system that was calibrated just a few weeks ago. Is it possible it is out of calibration or I did not calibrate it properly in the first place ? How do I go back and recalibrate ? I am old dude and some of the Apex stuff is over my head. Any thoughts /suggestions appreciated.
Thanks Mike
Thanks Mike