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#1
04-11-2010, 08:56 PM
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Ph Probe Calibration Help
When calibrating probes do you use the 3 different solutions or just 1? It seems that if I use the 4 and than try to calibrate with the 7 or 10 I get inconsistant readings. I have a monitor that I use for the tank and a seperate controllor that I use for my reactor. When I swap the probes I get different readings. They are both Pinpont and using Milwakee solutions. What am I doing wrong?
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#2
04-11-2010, 09:20 PM
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Tagging along.
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210 Gallon slowly gaining population. Foxface, Naso, Coral Beauty, 2 Clowns, 2 Chromis, Orange Anthias, and Striped Goby.
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#3
04-11-2010, 09:21 PM
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i get the same thing the tank i am using 7 and 10 and my calcium reactor i am using 4 and 7 and they are both in the tank now as i am waiting for the reactor and there is a difference of .20 between the two with the 4 and 7 probe reading higher probes are both 2 months old and re calibrated a few times as i could not believe it
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras 360 Reef Tank Last edited by BlueTang<3; 04-11-2010 at 09:24 PM.
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#4
04-11-2010, 09:34 PM
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kind of frustrating as both my probes are fairly new. I've gone through 4 packs of the solution today already and have no more 7 left. Begining to think that it may be either a problem with the monitor or the controllor. Has anyone had issues with the Pinpoint products? My Pinpoint thermometer went for crap after 2 years.
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#5
04-11-2010, 11:41 PM
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Only have one probe (got a while back from Aqua Digital) on a Milwakee monitor. I use 7 and 10 solutions and just go back and forth between them a few times, rinsing in rodi between solutions. Settles after about 3 cycles.
How's the battery on your monitor?
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my tank
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#6
04-12-2010, 07:03 PM
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you should always use 7 and 10 for your Tank PH and 4 and 7 for your Reactor PH.
You will find differences if you switch the 2 that is normal. You need to calibrate to the closest numbers to what your measuring.
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#7
04-12-2010, 07:27 PM
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More precisely, you need to choose buffer solutions that bracket your target pH. Salt water is ~ pH 8.2 so you'd choose pH 7 and pH 10 as your buffers. Your calcium reactor has ~ pH 6.5 I think and that would be pH 4.01 and 7 buffers.
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