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Old 05-09-2010, 11:55 PM   #11
ymmij
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Quote:
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@ymmij, you using the Dymax pH Meter as well right? How would you rate it so far?
so far so good... no major complain....


main reason i got was because it looked nice
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Old 06-09-2010, 01:29 AM   #12
Carz
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Thanks for your feedback! Certainly worth considering for the looks alone.
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Old 06-09-2010, 05:46 AM   #13
petermax
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Bro, with extra few red note you can buy a Pinpoint PH meter.
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Old 06-09-2010, 08:31 AM   #14
Ryan Red
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@Ryan Red, I guess pH7 is enough but if I really want to be anal or need to confirm accuracy, I suppose all pH meters should allow slope calibration base on either pH4 or 10.
hi TS, that depend on prode reading tolerance (+-%).
and also u wont want your tank water below ph4 or abover ph10.


ph meter (aquarium type) dont have or dont need to calibrate ph4 / ph10 i suppose.
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Old 07-09-2010, 02:33 AM   #15
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Are this the types that link to co2 solenoid and will on/off the co2 to achieve the desired ph?
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Old 07-09-2010, 11:20 AM   #16
BarraCuda™
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All probes are built differently and have different voltage at a specific pH value.

If your pH meter only allows pH7.00 calibration, it will assume that each pH1.00 is 59mV.

Better pH meter allow at least 2 point or even 3 point calibration. By knowing the exact mV at pH4,7 and 10. The pH meter can calculate more accurately rather than assume 59mV/pH.

For aquaria use, single point calibration is good enough. You just need a rough measurement, precise measurements are not required.
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Old 07-09-2010, 02:27 PM   #17
Carz
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Wow now that's what I call technical knowledge! Being a technical guy from other fields as well, I really appreciate such details as I can get very anal into things. Thank you very much and apologies if anyone is offended by my inquisitive nature. I'm still deciding between Dymax and the cheapo eBay one as I have a specific limited space I would want to mount it. Pinpoint is definately better... if only their monitor is much smaller...
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Old 07-09-2010, 02:27 PM   #18
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Oh almost forgot, where can I get it at best price? Lowest quoted so far is $155, buffering solution $9 to $10 each.

One bro says he got at $135 in Feb this year from Seaview/Nanyang but they refused to quote me over the phone but says higher than $135.
$155 is enough for you to buy a pinpoint ph meter already with pH7.000 and pH10.000/pH4.000 calibration liquid with an add of a green note its enough for you to buy a ac to dc adapter for the pinpoint pH meter.
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Old 07-09-2010, 07:11 PM   #19
Carz
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Bro petermax and PNT Guy, thanks for the headsup. Really appreciate it. You guys pointed out my exact dilemma. A smarter and practical choice would have been Pinpoint. I'll give it a serious consideration over my need to mount it on the front of my small tank canopy.
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Old 07-09-2010, 09:00 PM   #20
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i've been using pinpoint ph meter for ard 2 mths. so far so good.
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