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Old 11-16-2003, 08:53 PM   #11
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8.0 isnt that bad for winter when the house is all closed up. There is less oxygen in the air. If you opened a door for 2 hours you would slowly start to see it rise. Liquid PH test are not really that accurate due to variances in how everyone sees color. If you really want to know the exact PH i would buy a Electronic PH meter.
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Old 11-16-2003, 08:54 PM   #12
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tell me about it. these eyes are getting just a little old. LOL
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Old 11-16-2003, 09:08 PM   #13
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Re: Seachem Ph test

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Originally Posted by Dewey
Ok i ran my reference it says im at 8.3 .
And heres the problem I tested the water again it says im at 8.0 .

All other test come out ok. I cant figure this one out.

Thanks Dewey
your ph will be different in the morning, afternoon and evening
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Old 11-16-2003, 09:10 PM   #14
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ph test alkalinity

i did a alk. test If i did it correct. (Seacem) It took nine drops. Which i think = 4.5meg/l.


Ok what the best why i can try and raise ph.

Thanks Dewey
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Old 11-16-2003, 09:15 PM   #15
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8.0 isnt all that bad, but if you want too raise it you can use seachems marine buffer too raise your ph and it has its own buffer and will not raise your ph above 8.3 even if you over dose.
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Old 11-16-2003, 09:17 PM   #16
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you can also add a couple tbs of bakeing soda
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Old 11-16-2003, 11:15 PM   #17
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At what point during your photoperiod are you testing the pH? The pH will be lowest in the morning or at the end of your tank's "dark" period. pH will be highest at the end of lights on. This is due to the photosynthetic activity during lights on removing carbon dioxide and giving off oxygen. A swing of .2-.3 pH points from night to day is normal in most tanks. If your pH falls out ot the 8.0-8.3 range then you may need to take corrective action. Before adding any chemical buffers I would make sure there is good surface agitation in the tank and that the surface is coming into contact with air. Often taking a cover off the tank will raise the pH by .1-.2 points alone. When carbon dioxide builds up in the water it drives the pH down. This can be fixed by increasing water to fresh air contact by opening windows nearby, going with an uncovered tank, or bubbling fresh air through the water via a skimmer or sump. And now I've rambled on too long
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Old 11-16-2003, 11:15 PM   #18
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Re: ph test alkalinity

Quote:
Originally Posted by Dewey
i did a alk. test If i did it correct. (Seacem) It took nine drops. Which i think = 4.5meg/l.
Ok what the best why i can try and raise ph.
If the results of the alk test are accurate, I would not suggest using anything to adjust your ph chemically. The low ph (if accurate) will be environmental not chemical. You need to look at your system for possible causes. Insufficient surface aggitation, covered tank and as already suggested too much ambient CO2. Low O2 will be your problem moreso than anything else.

Cheers
Steve
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Old 11-17-2003, 12:06 PM   #19
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Using Seachem , 9 drops = 2.25meg/L. I think the math is =9/2 *0.5meg/L = 2.25meg/L. This is what its says in the instructions sheet.
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Old 11-17-2003, 12:41 PM   #20
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Actually 4.5 mEq/l would be accurate. The instructions read:

Quote:
Originally Posted by SeaChem
3. Each drop is equal to 0.5 mEq/l. The number of drops to get to yellow divided by 2 is the total alkalinity.
So 9/2= 4.5 mEq/l

Cheers
Steve
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