I’ve been trying to figure out why my pH tends to be so low. According to my Apex my pH peaks at around 7.98 and drops down as low as 7.75 at night. The probe is freshly calibrated and reads 7/10 in the calibration fluids so it’s about as accurate as I can get it.
I have a co2 meter on my Apex and my average co2 is around 650ppm but does drop as low as 400-500ppm during the day since I tend to keep the windows cracked. I run an outside airline to my skimmer, I run a reverse light cycle fuge packed with chaeto and I dose b-ionic. Also I have quite a lot of surface movement with my Mp40s. My alk is usually around 8.9-9 dkh. This is a reefer 350 that is close to 3 years old and has quite a lot of coral. It just seems with all of this I should be in a more normal range of 8-8.2 or so, yet I can’t get the tank to even peak over 8.
I have a co2 meter on my Apex and my average co2 is around 650ppm but does drop as low as 400-500ppm during the day since I tend to keep the windows cracked. I run an outside airline to my skimmer, I run a reverse light cycle fuge packed with chaeto and I dose b-ionic. Also I have quite a lot of surface movement with my Mp40s. My alk is usually around 8.9-9 dkh. This is a reefer 350 that is close to 3 years old and has quite a lot of coral. It just seems with all of this I should be in a more normal range of 8-8.2 or so, yet I can’t get the tank to even peak over 8.