Variable PH?

[d2mini]

So i FINALLY hooked up my PH monitor to my Reefkeeper Lite two days ago and I noticed that during the day the PH is as high as 8.2 and right now with the daylight lights off i noticed it is reading 7.66.

Is this normal?
The monitor is in my sump in the return section.

Of course I did the whole calibration thing and double checked it when installing it.

 

[bjohanson1234]

If I recall, Ph tends to drop at night because the algea isnt photosythesising:question: any more and the fish are still using up the oxygen.

So the CO2 is making the water more acidic.

If you have a fuge, try running the light on an opposite cycle as the main tank.

Brian

 

[d2mini]

If you have a fuge, try running the light on an opposite cycle as the main tank.

That's exactly what I do.

 

[bjohanson1234]

:dunno: Maybe it is still young and not keeping up with the demand :dunno:

Some one should be along soon enough to help out a bit more

 

[yote]

Thats fairly normal for the PH to do that.
Mine will drop off to 8.1-8.2 at night.Usually 8.4 to 8.5 durning the day.

 

[d2mini]

Yote, is my PH too low?

 

[yote]

The high side looks good Dennis.But it is dropping off pretty good at night.
Whats your alkalinity and what are you using to supplement it?

 

[ccCapt]

Check this out from another Texan....
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1687949