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pH meters


David R

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So my trusty API pH test kit has nearly run out as I've been using it a lot since switching to rainwater for the tank, and I'm considering spending up to get something like this for the sake of both accuracy and convenience;

http://www.amazon.com/Hanna-Instruments ... =hannah+ph

I do have a TDS meter already but having the all-in-one unit is quite appealing. Any feedback from someone using this kinda thing would be greatly appreciated, I believe Hanna is a fairly reputable brand but certainly not the only one out there. I see there is an AquaOne electronic pH tester available, but I'm a bit sceptical of buying precision electronics from a "cheap" brand like that...

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I used the below unit for years with no issue, tested against a pen probe and two liquid tests. You can perform a water change and watch the ph swing (depending how you do your water change).

http://www.ebay.com/itm/Digital-pH-Meter-Water-Tester-pH-Monitor-for-Aquarium-Replaceable-BNC-probe-ATC-/400315316022?pt=LH_DefaultDomain_0&hash=item5d34a6f736

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I used the below unit for years with no issue, tested against a pen probe and two liquid tests. You can perform a water change and watch the ph swing (depending how you do your water change).

http://www.ebay.com/itm/Digital-pH-Meter-Water-Tester-pH-Monitor-for-Aquarium-Replaceable-BNC-probe-ATC-/400315316022?pt=LH_DefaultDomain_0&hash=item5d34a6f736

How often did you have to replace the probes and how much do they cost dude?

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