Reading PH color chart - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 02-01-2008, 02:02 PM Thread Starter
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Reading PH color chart

API test kit and other PH kits.

Am I the only one that can not pick between 6.8, 7.0 and 7.2 ?

5ML of tank water and 3 drops of solution, hold tube agianst white background in good light.

I could easily pick any of the colors.

Whats the deal with this ?

Would using less water give me an easier to read test without altering the test ?

Seems crazy that I can't get this reading right.
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post #2 of 2 (permalink) Old 02-01-2008, 02:15 PM
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The color differences can be subtle, no doubt there. You can add a couple more drops to help the color become a bit more intense, no harm done there. I find holding it at finger's width away from the white card in my brightest lit room to help the most.

The majority of pH test kits use the same chemical, but you could purchase a pH test probe, digital readouts are easy ...just need to keep it calibrated.
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