need ph testing advice - The Planted Tank Forum

 
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post #1 of 14 (permalink) Old 02-19-2013, 02:54 PM Thread Starter
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need ph testing advice

So today yet another cheap ph test pen went screwy and I threw it away in disgust.

Chemical tests seem to read differently depending on the ink color that is printed on cards that come with kits.

Anyone have any suggestions for me on what they feel is best for reading ph on aquariums? To say I'm fed up is an understatement. And I have 25+ tanks (and growing) I maintain.

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post #2 of 14 (permalink) Old 02-19-2013, 03:05 PM
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milwaukee systems ph meter. nicely accurate and you can calibrate it with calibration solutions. Or just invest in a real pH meter that they use in scientific settings. Our lab has one, a little big, but accurate to a thousandth of a degree. That having been said, it's rather pricey. I bought mine for $140.
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post #3 of 14 (permalink) Old 02-19-2013, 03:15 PM
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Or just don't worry about pH anymore. lol. Once you know your source water's pH, or your active substrates pH lowering ability, no reason to test all the time once they're setup.

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post #4 of 14 (permalink) Old 02-19-2013, 03:16 PM
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Yeah get a Hanna or Milwaukee PH tester. Pens are garbage. I ahve 8 of these and all work great. I tried 5 pens all read different even after all were calibrated in the same solution with in mins of each other.

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post #5 of 14 (permalink) Old 02-19-2013, 03:18 PM
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"source water's pH" source water PH varies so much... Mine chages with the season and with the plant it runs through. Agency says my ph is 8.2 but my tap is 6.8 right now.... then the RO comes out 5.7. But 2 months it will change

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post #6 of 14 (permalink) Old 02-19-2013, 03:27 PM Thread Starter
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Okay, I've calmed a little bit now. Thanks guys.

Excellant advice, however the $100 investment is going to have to wait since I just bought an Alita AL-60 air pump and multi-feet of tubing. You know how that goes, right? LOL

So, back to chemicals...

Is there a company whose ph color card is

1) easier to read than API's ( between 6.6 and 7.2 they all look freakin' alike in the water!)

and

2) measures low AND high ph without two separate bottles/cards?

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post #7 of 14 (permalink) Old 02-19-2013, 03:30 PM
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need ph testing advice

Any hydro store will have pens. You can also buy them online and save 10-20 off mark up usually priced 80-120 in store. I have a Milwaukee ph meter for my co2 system. Love it.
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post #8 of 14 (permalink) Old 02-19-2013, 04:05 PM Thread Starter
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Thanks SD, however I've gone through enough pens that I just don't trust them anymore. So, next big buy will be a ph meter. Next little buy, ph test kit.

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post #9 of 14 (permalink) Old 02-19-2013, 04:10 PM Thread Starter
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I'm going to start a new thread just on ph test kits so I won't confuse anyone. LOL

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post #10 of 14 (permalink) Old 02-20-2013, 01:06 AM
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To those who have Milwaukee pH meters, they have various models. Which model are you talking about.
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post #11 of 14 (permalink) Old 02-20-2013, 02:14 AM
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[QUOTE=Soothing Shrimp;2586762]

Is there a company whose ph color card is

1) easier to read than API's ( between 6.6 and 7.2 they all look freakin' alike in the water!)

[Quote/]

i'm so glad i'm not the only one

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post #12 of 14 (permalink) Old 02-20-2013, 02:19 AM Thread Starter
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*high five*

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post #13 of 14 (permalink) Old 02-20-2013, 02:25 AM
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Soothing ... once you figure out a good solution, let me know. Apparently, I'm on the market for a pH meter as well, since mine broke today
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post #14 of 14 (permalink) Old 02-20-2013, 03:20 PM Thread Starter
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think I'm going with the American Marine Pinpoint pH Monitor. I put up a separate thread for some questions I had, but almost everything I look at refers to that one in some way, shape or form.

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