03-21-2020, 08:01 AM
Join Date: Apr 2005
Location: Brentwood, CA, USA
iTrader Positive Rating: 100%
| | Re: CaCl and MgSO dosing increased PH
Originally Posted by EvanC
Thank you for your response!
I measured again this morning and the pH was still 7.6. I think this level is ideal if it remains stable. Interestingly, my kH has increased from 2 to 4 since dosing mag and cal. Would you recommend adding a small amount of baking soda to increase it over 5 as you mentioned?
It is always best to adapt to whatever pH your tank has, rather than trying to adjust the pH to some "better" value. It is natural for the pH of the water to vary during the day and even day to day, so no harm is done when that happens. The pH is buffered by the presence of carbonate or bicarbonate and CO2. The pH that it is buffered to is a function of the ppm of CO2 and carbonate, so when the CO2 varies, the pH the water is buffered to also changes.