View Full Version : Would a pH of 6.2 be harmful to my reef?

01/14/2008, 02:53 PM
My probe is reading low 6 for pH even with calibration. My salifert pH kit is reading about 8. But I heard of problems with salifert kits lately (not sure if it was pH or something else...)

Corals and fish behaving normally.

01/14/2008, 02:56 PM
Yes at 6 everything would be dead due to being acidic.

01/14/2008, 02:57 PM
There is something wrong with your probe I would think. Coral skeleton and aragonite would start dissolving at that Ph level. Well, in a calcium reactor anyways.

01/14/2008, 02:57 PM
Your probe has likely gone bad

01/14/2008, 02:57 PM
If the reading is truly 6ish, thats a 100 times more acidic than aquarium water should be and I would guess that would be pretty bad for your animals over the long run. I think that your reading must be wrong though. Try a different ph test.

01/14/2008, 03:24 PM
If that is the true reading, your tank just turned into one big calcium reactor. I'd check with another tes kit.

01/14/2008, 03:42 PM
Thanks guys... first time ever with a pH probe. So I'll look into it more. I'm looking at the 6.2 - 6.3 reading and watching my tangs and all my fish begging for food.... coral growth improving etc etc...

01/14/2008, 04:16 PM
I believe the only salifert test with known issues was alkalinity. As far as I've heard, all others are ok.

Somebody correct me if I'm wrong.

01/14/2008, 04:16 PM
As long as it is calibrated for both 7.01 and 10.01 and it is still reading wrong, it's the probe. Probes generally last two years at the most from what I have read. Good luck!

01/14/2008, 04:26 PM
Check out this common ph table. See where your tank would fall?


01/14/2008, 04:29 PM
mmmm....urine :)

01/14/2008, 05:03 PM
What are you talking about, you dont do water changes with urine?

01/14/2008, 05:06 PM
Never host a frat party if you have a reef tank.

01/14/2008, 05:24 PM
You guys are hilarious!

01/14/2008, 05:24 PM
...wait.... I shouldn't do water changes with Urine?

I thought because I was at 8.6 id want to drop it a bit.

Is urine a no no?