Randy Holmes-Farley
Reef Chemist
View BadgesStaff member
Super Moderator
Excellence Award
Expert Contributor
Article Contributor
R2R Research
My Tank Thread
- Joined
- Sep 5, 2014
- Messages
- 67,529
- Reaction score
- 63,975
I still get a pH of 7.8 NBS with 7 Alk and 1250 ppm CO2 level. Again assuming a well aerated tank.
OK, so a little higher in CO2 will drop it lower, and a CO2 level not in equilibrium can be lower still.
A better title might be:
"If you pH is less than 7.8, one important thing to check is pH calibration"."