I had napture for 20 days or so, a day I noticed that when lights do come on, my orp and ph dips down a little, orp stays down, ph eventually comes up. Towards evening. I don't understand. Isn't both need to have completely opposed effect?
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I think he's asking more about the dip after lights come on...Don’t know much about orp and don’t care too unless I’m using ozone which I haven’t in 15 years or so.. your ph will always be lowest when the lights come on and go up through out the day and peak like a hour after your lights go off.. that’s common and corals uptaking the co2 in the water column.
Yeah I see that now… hmmm.. few things could cause that.I think he's asking more about the dip after lights come on...
It could be a few things.. c02 levels rising in your house? Are they’re more pets or people around the tank at that time? Do you dose any bacteria or anything that could drop 02 levels? Do you top off with kalk?At 10a.m my lights turn on, my ph was 8.13
At 11:30a.m. ph dropped to dropped to 8.07.
Have you checked your ph with a hand held or something else besides the apex? I’ve found mine isn’t the greatest at being accurate.. to me it seems your ph should be much higher!I dose Nitrates at midnight, as well as acro power at 3 a.m. I also dose sodium hydroxide mixed per instruction on this forum. It's being dosed through the night, I also just recently put co2 scrubber on my skimmer. So far no positive results with added co2 scrubber.
I would agree on accuracy. I have a Milwaukee ph meter and it reads 8.3-8.4. I calibrate both meters using same solution. But calibration aside, even if it's wrong. That wouldn't explain a dip in measurements.Have you checked your ph with a hand held or something else besides the apex? I’ve found mine isn’t the greatest at being accurate.. to me it seems your ph should be much higher!
Well sister brought up some good points! I will say my ph doesn’t drop really after lights come on maybe a hair like .1 or .2 at the most.. maybe Randy can shed some light on it… I know as my house wakes up and people are about and around my tank in the morning it’s at its lowest but climbs back up soon after everyone is gone for work or school besides the dogs haha!I would agree on accuracy. I have a Milwaukee ph meter and it reads 8.3-8.4. I calibrate both meters using same solution. But calibration aside, even if it's wrong. That wouldn't explain a dip in measurements.
BTW thank you for your help so far. It's not that I'm worried about it. Is more of curiosity why it's doing it.