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Old 19-11-2005, 12:20 AM   #11
subxero
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Originally Posted by monsterz1975
Now my reading of PH in the reactor is -1.97 , can it be so low PH. I had switch off my co2 and let my PH controller and solenoid valve do the job.
wow. found something new.. teacher never teach in school.

Thats a neat looking CR. By the way, why do you need 2 chambers? more Ca will be release into the water?
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Old 19-11-2005, 01:50 AM   #12
BarraCuda™
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Originally Posted by monsterz1975
Now my reading of PH in the reactor is -1.97 , can it be so low PH. I had switch off my co2 and let my PH controller and solenoid valve do the job.
The media would have scratched the pH probe and caused the error, it happened to me when I dropped the probe into the sandbed.
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Old 19-11-2005, 02:23 AM   #13
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The media would have scratched the pH probe and caused the error, it happened to me when I dropped the probe into the sandbed.
ah, never never scratch the bulb of the probe or u can forget about using it anymore as it will most probably give u inconsistent readings.
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Old 19-11-2005, 12:41 PM   #14
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Originally Posted by subxero
wow. found something new.. teacher never teach in school.

Thats a neat looking CR. By the way, why do you need 2 chambers? more Ca will be release into the water?
So that excess carbonic acid in the effluent can be reacted again and would not be released into your water
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Old 19-11-2005, 02:03 PM   #15
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Originally Posted by blueheaven
So that excess carbonic acid in the effluent can be reacted again and would not be released into your water
Tks, I get the picture now.
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Old 19-11-2005, 02:45 PM   #16
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Originally Posted by BarraCuda™
The media would have scratched the pH probe and caused the error, it happened to me when I dropped the probe into the sandbed.
Ok will try with other probe , thanks for the help.
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Old 20-11-2005, 01:18 AM   #17
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Originally Posted by monsterz1975
Ok will try with other probe , thanks for the help.
Make sure you calibrate the probe prior to placing it the CR with pH7.0 and 10.0 buffer solution otherwise get wrong readings.

Also, what is the recommended pH for the CR media?

For ARM, the recommended pH is 7.0 but I set the pH controller at pH6.75 as it will kick-in/out the solenoid when the pH is 6.8 and 6.7 inside the effluent.
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Old 20-11-2005, 02:51 AM   #18
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Originally Posted by nim75sg
Make sure you calibrate the probe prior to placing it the CR with pH7.0 and 10.0 buffer solution otherwise get wrong readings.

Also, what is the recommended pH for the CR media?

For ARM, the recommended pH is 7.0 but I set the pH controller at pH6.75 as it will kick-in/out the solenoid when the pH is 6.8 and 6.7 inside the effluent.

A little of topic but do you know where I'm able to get calibration liquids?
Need pH 7 and pH 4.

Hmmm. white does kind of look gd on that reactor.
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Old 20-11-2005, 03:37 AM   #19
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Originally Posted by Joe_pp
A little of topic but do you know where I'm able to get calibration liquids?
Need pH 7 and pH 4.

Hmmm. white does kind of look gd on that reactor.
you need just abit or alot? If abit then go to any LFS ( Freshwater or Marine) , common brands are Adec and some China ones. If you require fresh prepared and large qty, pm me.
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Old 20-11-2005, 03:40 AM   #20
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Originally Posted by bonjour2
you need just abit or alot? If abit then go to any LFS ( Freshwater or Marine) , common brands are Adec and some China ones. If you require fresh prepared and large qty, pm me.
Thanks. Will do.
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