Before RO/DI PH 8.3 - 8.4
After PH Now 8.0 (Over 2 weeks and 2 water changes 1 gallon a day top off)
Ok I have noticed a slow drop in my PH since I started using the RO/DI unit. I test the water from the unit and got a PH of 7.2. Would I need to add backing soda or some other buffer to the water before I top off. I did test and found the 2 table spoons brought the PH up to 8.4. I do not think its an CO2 issue my house is not that tight and we have the windows open a lot. Any help or suggestion would be appreciated.
Thanks in advance