pH swing...how much is too much?

[maxxII]

I have a 120 gallon tank which is located in the basement of my house. This keeps it cool in the summer, but also keeps the pH low when the AC is running.

My wife has horrible allergies, so the AC runs pretty much non stop from April to Oct.

During the winter with no AC, I can easily keep pH at 8.3-8.4. With the AC running, the pH drops down to 7.86-7.88 overnight and will only rise to about 8.05 -8.1.

Is this too much of daily swing to maintain healthy SPS?

Is this too much of a yearly swing to maintain healthy SPS?

Thanks in advance guys/gals....

 

[Peter Eichler]

No, and No. Back when I bothered to monitor my basement tank regularly bounced around between 7.8 and 8.1