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Old 08-15-2008, 12:14 PM   #1
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Ph issues

Up until now I've had no PH problems - its been staying fairly stable around 8.2-8.4. I've been doing bi weekly water changes, about 10-20% every two weeks. I tested my water this AM and found the PH to be between 8.4-8.8 on my chart - hard to tell for sure since its such a wide range, but it definatly was a lot more purple. I tested my QT tank, it was a definate 8.2 ( although the lighting times are different on that tank)

Ammonia was 0, Nitrite 0, and Nitrate about 10-15ppm. Temp at 78 degrees. Source water was about 7.8 before adding salt. I know PH fluctuates, but I didnt expect it to be quite that high. Current residents seem to be doing ok, though I noticed the one clown wasnt as interested in food - the other ate fine.

I do only have one power head running at the moment - i'm getting another here, this weekend ( as well as a emperor 400 filter running) - could the problem be too little circulation O2 exchange?

Any ideas on why the PH is so high.. and how I can safely bring it down?
You think you have a handle on things then something happens heh - You're always learning in this hobby for sure

thanks for the help
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Old 08-15-2008, 12:54 PM   #2
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High pH: Causes & Cures - by Randy Holmes-Farley
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Old 08-15-2008, 03:27 PM   #3
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Make sure to tackle the cause. phUp and phDown products are likely to give you more trouble than relief.
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Old 08-15-2008, 03:34 PM   #4
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Agreed.. I put in 1/4 the dosage required to raise it up .5 it went from 5.8 to 7.2 just like that. lol it doesnt work to well. a few guys reccommended to me crushed corral or drift wood.
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Old 08-15-2008, 03:55 PM   #5
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Your salt mix and water changes should regulate pH unless you're adding something or something is being consumed. Drift wood drives down pH, crushed coral is a buffer. Argonite sand buffers just like crushed coral, but is compatible with more types of critters.
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Old 08-15-2008, 04:14 PM   #6
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Are we all reading the same post? I believe the OP wants to know why his pH is high in his saltwater tank.

Did either of you read the article I linked to? 1/2 dosages? driftwood in a saltwater tank?
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crushed coral is a buffer. Argonite sand buffers just like crushed coral
Maybe in the low pH of a freshwater tank, but it does not buffer anything in a saltwater tank. FWIW, aragonite (CaCO3) only starts to slowly dissolve at a pH of about 7.5 and lower.
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Old 08-15-2008, 04:27 PM   #7
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I've heard others report that argonite sand did have a stablizing effect in saltwater. It can't hurt to have extra buffer around if you start messing with pH additives to fix high or low pH.

Checking the pH of the new saltwater and areation levels would be my first stop. I made the assumption your article covered both of those when I answered as I did.

I agree that driftwood in saltwater isn't a great idea, I was pointing out that it makes the pH drop, but does not buffer to a particular pH.
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Old 08-15-2008, 07:11 PM   #8
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Quote:
Originally Posted by catmel View Post

Any ideas on why the PH is so high..
cccapt's link pretty much covers the possiblities...


Quote:
and how I can safely bring it down?
Water changes will do the trick. Assuming your new salt water is OK. Have you tested the pH of the salt water you've got stored?
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Old 08-15-2008, 07:39 PM   #9
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Quote:
Originally Posted by Kurt_Nelson View Post
cccapt's link pretty much covers the possiblities...




Water changes will do the trick. Assuming your new salt water is OK. Have you tested the pH of the salt water you've got stored?

I tested my stored water, again about 8.8, I had it covered with a PH going. I'm guessing my problem may be not enough airation? From what I understand from that link, airation will help lower it? I'll test it again when I get home. My QT tank was normal at about 8.2, but I am guessing i have more airation in the tank, which is why its normal...

My PH usually stays very stable around 8.2 - which is why this bright purple on my test this am seemed odd.

I dont want to add any additives as previous posts stated, just find the cause and correct it

thanks for the help!
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Old 08-15-2008, 11:20 PM   #10
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The article also mentioned the possibility of the test kit being inaccurate.
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