Reef Angel Forum

On the website chart, usually on the pH plot every now and then (once or twice daily) a reverse peaks appear. My pH is pretty stable above 8 and these peaks goes down to 6 and immediately get back to above 8. See the attached picture from my website chart. Sometimes similar thing happen to the temperature plot, sudden reverse peak to 0 and then back to normal 77. I am wondering what could be the reason for these peaks. I know I can delete them but I am getting kind of tired doing that every day. Any thoughts on that?

Are your probes very close to the surface? Might your water level be dropping below them before your ATO kicks on? I turned my ATO off for a day and noticed the same thing happening and that is what caused it

No my probes are deep enough and the level is pretty stable. Anyway thanks for the suggestion.

I get these too. I just chalk them up to jitter... Roberto any idea why we see those dips? I've always had them...with 3 different probes as well..

Not quite sure what it could be.
Is it always the same value that it dips to?

It doesn't alway dip to the same # but it seems to dip the same amount. I don't see the dips on the RA portal charts, but I do see them on Reeftronics. I have a feeling though they are dipping to 0 and the RA portal charts don't show 0 and Reeftronics doesn't render them all the way down... I say this because I occasionally get alerts that Temp / WL and PH (all 3 at once) are 0 and less than my alert value...

Here's what they look like....the change in value a few days before last week were when I changed to a new probe...

In my case the pH dips go down usually to 6.03 sometime 5.98. The temp usually goes down to 0.
I had to lower the pH alert to 4.8 to stop receiving the alerts every couple hours.