Low Ca/Alk/pH in Tank, High CO2 in Condo

[Beverly]

Well, had the windows open last night and added an ocellating fan in the hallway between the two rooms pointing into the dining/living rooms where the tanks and NSW storage area are. Interesting results

Yesterday's pH with 1/2 hour aeration:

before aeration pH 8.07
after aeration pH 8.07

Today's pH with 1/2 hour aeration:

before aeration pH 8.15
after aeration pH 8.22

Both water samples were from the same pail, covered with a lid, that had been aerated with a powerhead for the past 4-5 days.

I do believe the CO2 was replaced with O2 overnight with the windows open and fan going and the NSW in the pails even benefitted from the extra O2. It even smells fresher in here What we're going to do when the temps dip to -30, I don't know, but for now the open window thing is going to be a must.

Now, all I have to do is increase alk and I'll be feeling good