pH Fluctuation

[mred]

<span style="font-family: Courier New;">My pH is not changing like I would expect. It is staying in the range of 8.25 to 8.33. I don't think that is not too wide a range. But the oddity is that it goes UP at Night, not down. Any ideas at to why it goes up instead of down at night? As a starter thought, could I have such a bio load (hard and soft corals and a dozen fish in a 150g) that the O2 level is depleted during the "lights on" when most of the activity is happening? :huh:</span>

 

[xyzpdq0121]

Do you have a fuge on a reverse light cycle? Are you running a Cal reactor or a Kalk Reactor only at different times in the day?

 

[mred]

Actually, none of the above.

I dose Liquid Reactor, Iodine, and Strontium about every third or fourth day, depending on the CA levels. Trying to keep them abour 400+.

Hmmmmm

 

[purplegorilla]

When is the last time you calibrated your pH probe?

 

[jmaneyapanda]

Do you live in a black hole? That is wierd. I would double check the probe, as mentioned. Actually, perhaps the lighting ballasts are provided some sort of interference with the PH meter.

 

[schwaggs]

Maybe you have the pH probe connected backwards...

Seriously, that is really weird. Do you have a CA reactor or kalk reactor? Is your skimmer on a timer?

 

[mred]

I will recalibrate the probe, though the pH has been in the same range since I installed it three months ago.

That is a reasonable possibility.

Skimmer on 24/7. No CA reactor as I mentioined earlier.

 

[schwaggs]

mred;145626 wrote: Actually, none of the above.

I dose Liquid Reactor, Iodine, and Strontium about every third or fourth day, depending on the CA levels. Trying to keep them abour 400+.

Hmmmmm

Do you dose anything every day? Does the pH rise at night even when you don't dose anything?

 

[wbholwell]

Do you have more people in your house during the day compared to the nights?

Do you open windows in your house during the day, and shut them during the night?