Website pH plot reverse peaks

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Bogdan
Posts: 109
Joined: Sat Aug 11, 2012 9:16 pm

Website pH plot reverse peaks

Post by Bogdan »

pH plot.jpg
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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? :?:
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ReEfnWrX
Posts: 234
Joined: Tue Nov 05, 2013 8:40 am
Location: Houston TX

Re: Website pH plot reverse peaks

Post by ReEfnWrX »

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
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Bogdan
Posts: 109
Joined: Sat Aug 11, 2012 9:16 pm

Re: Website pH plot reverse peaks

Post by Bogdan »

No my probes are deep enough and the level is pretty stable. Anyway thanks for the suggestion.
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lnevo
Posts: 5430
Joined: Fri Jul 20, 2012 9:42 am

Re: Website pH plot reverse peaks

Post by lnevo »

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..
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: Website pH plot reverse peaks

Post by rimai »

Not quite sure what it could be.
Is it always the same value that it dips to?
Roberto.
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lnevo
Posts: 5430
Joined: Fri Jul 20, 2012 9:42 am

Re: Website pH plot reverse peaks

Post by lnevo »

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...
Attachments
graphra_ph30.png
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graphra_ph7.png
graphra_ph7.png (14.78 KiB) Viewed 4013 times
Bogdan
Posts: 109
Joined: Sat Aug 11, 2012 9:16 pm

Re: Website pH plot reverse peaks

Post by Bogdan »

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.
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