Ph probe help

[Sisterlimonpot]

I'm certain that you had it right all along. Too bad you don't have an extra probe to definitively prove it. But you'll find out on Wednesday.

PS, I did check amazon and they do have the pinpoint pH probe for $38.

 

[Pistondog]

Bad probe.
Replace it and also get one of these for cross check

HI98108 Waterproof pHep+ Pocket Tester

Have your pH readings displayed through a large LCD window down to a resolution of 0.01 pH. Monitor your aquariums temperature and pH all with a single pen-style tester. Hanna's HI98108 Waterproof pHep+ Tester can give you pH readings from 0.00 all the way up to 14.0 pH making it perfect for...

www.bulkreefsupply.com

 

[Uncle99]

When you burn a candle you can rob the rooms O2 content. That would make PH drop.
Open the windows, close the candle, see what the prob does

 

[Pistondog]

When you burn a candle you can rob the rooms O2 content. That would make PH drop.
Open the windows, close the candle, see what the prob does

The candle will consume some oxygen, but not enough to make a difference.
If that were the case, we all would suffocate when the fireplace was burning.

 

[USMA36]

I'm 99% sure it's the probe. Ph now 6.1.

 

[JRAD]

Sounds like your probe is bad. Did you check to make sure it is still connected properly to the apex?

 

[BCSreef]

Reducing O2 will not drop pH. High CO2 will. pH probes are quite delicate. My guess is physical damage. Probe is shot.

 

[Philly Reefer]

Have you try rebooting the apex?
Cleaned probe? I had some film on mine because my probe is next to my skimmer(bubbles). Moved that out. No more issue it seems.
Unplugged, reboot, put them back in.

 

[Doglips56]

Can a ph probe crap the bed quickly? My apex is shown a ph of 7.5 and dropping. No changes to aquarium. It was 8.1 at 1pm. Then dropped like a rock out of nowhere. I don't have another way to calibrate or a second meter. What could cause a rapid drop like that. Tank seems fine.

This is precisely why I got rid of my Apex. A pH test is so easy to run and if everything looks fine does it really matter?

 

[USMA36]

Sounds like your probe is bad. Did you check to make sure it is still connected properly to the apex?

I put tried the probe on the orp slot set to ph2 same readings. Probe says 5.2. Of that was accurate I'm pretty sure most things would be dead.

 

[JRAD]

Do you have a ph test kit? That would give you quick assurance that your probe is bad.

 

[Uncle99]

The candle will consume some oxygen, but not enough to make a difference.
If that were the case, we all would suffocate when the fireplace was burning.

You would be amazed what a candle can do in a small room over several hours.
My oxygen content actually increases when the fireplace is on as it “pulls” outside air into the room, otherwise your fireplace would reverse flow and put the smoke in your room.

That being said, your right, it would not cause a consistent and large drop like suggested by the OP