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Old 10-05-2003, 12:13 PM   #1
tkjeffrey
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how do I raise PH?


I tested PH today and it was 7.8 how do I raise it?
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Old 10-05-2003, 12:24 PM   #2
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Buy a tank from salt creepette he cant bring his down LOL J/k
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Old 10-05-2003, 01:01 PM   #3
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You can try something like Kent Marine's Aquarium Buffer. I haven't used it myself, so maybe someone on the board can share their experience (or better ideas).
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Old 10-05-2003, 06:33 PM   #4
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I use a product from sea-lab called no#14ph. its a buffer reset/ph correction additive. I have used it for quite some time and it keeps my ph at or about 8.15 to 8.25. It can be found at most online stores.
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Old 10-05-2003, 09:21 PM   #5
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before you do to much, when did you test the pH? if it was in the morning than that is a little low, but not crazy low. i would test right after the lights go out. you should find the ph is much higher then. it should also be in the 8.2 range. if you do not have a reverse lighted refugium then your morning pH could be that low everyday.

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Old 10-06-2003, 12:03 AM   #6
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before you do to much, when did you test the pH?

Ya took the words right from my fingers




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Old 10-06-2003, 12:32 AM   #7
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test kit or pH meter, and if so, what brand?
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Old 10-06-2003, 07:48 AM   #8
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took it at 11 am with with a red sea test kit.
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Old 10-06-2003, 08:44 PM   #9
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and when do your lights come on in the tank you tested? Have you made up some fresh IO and tested it at 35 ppt salinity?
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Old 10-06-2003, 09:01 PM   #10
tkjeffrey
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Could you explain more tdwyatt? my lights come on about 7:30 or 8 am.
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Old 10-06-2003, 10:03 PM   #11
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the pH naturally drops over night as plants and algae switch from daytime photosynthesys withich uses up CO2 from the water column to night time net respiration, where the plants give off net CO2. This drives pH to the lowest levels of a articular system in the morning. If you couple that with a tight house such that it retains some CO2, a CO2 based Reactor, or testing kit inaccuracies or errors in methods, then it could account with your 7.8 or so pH in the mornings.

Test some freshly made IO that is adjusted to 35 ppt salinity, it should be about 8.2 pH when fully mixed and allowed to areate for a few hours (bubbler helps). If you take the tank's pH at the end of the night for the tank, it will be at the same time that the tank has its highest concentration of Carbon Dioxide of the day. As soon as the lights come on, the concentration of CO2 begins to drop as photosynthesis uptakes CO2 and turns it into Carbohydrates. By the end of the photoperiod, the tank will hve it's lowest level of CO2, and its highest pH of the day (as high as 8.5 to 8.6). The pH of the tank is almost directy tied to the concentration of both pCO2Atmospheric and pCO2watercolumn, and the partial pressure of CO2 in the water is almost in constant equilibrium with atmospheric partial pressures of CO2. If your system has an unusual exposure to high atmospheric concentrations of CO2 (this is a relative thing, you could double the concentration of CO2 and have little effect on animals, but the plants have a huge reaction to this), it will be reflected as a drop in pH in the tank water, easy to do with a reactor or in a home with good seals around doors and windows.
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Old 10-06-2003, 10:05 PM   #12
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but it could be the time of day and the methodology of testing. Think about buying a pinpoint pH meter. Constant readouts, very reliable and accurate.
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Old 10-06-2003, 10:12 PM   #13
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Originally posted by Mafiaman
Buy a tank from salt creepette he cant bring his down LOL J/k
uh dude, I believe Salt Creepette is a feminine noun
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Old 10-06-2003, 11:04 PM   #14
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uh dude, I believe Salt Creepette is a feminine noun
Thanks Doug, I wasn't gonna say anything but since you mentioned it
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Old 10-07-2003, 12:11 AM   #15
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well I owe her that much
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