[untamed]

Originally Posted by whatcaneyedo

For me I have to keep my alkalinity up around 11-12 dkh in order to keep my pH up in the 8.0- 8.2 range. There is so much carbon dioxide in my house (especially in the winter) that if I let my alkalinity fall down to 7-8 my pH will also drop to 7.6-7.8

I do everything from drawing my skimmers air from outside to dosing kalkwasser in conjunction with my Calcium reactor to growing macro algae and leaving the top of my system open for better gas exchange. But still I fight with low pH.

Man...I could have written the exact same thing...word for word. My alk is higher than I would like (10) for exactly this reason. I've learned some very interesting stuff about my Kalk reactor as I've tried to use it to prevent overnight pH lows. (when you are hitting nightly lows of pH 7.6...you just can't ignore pH at that point)