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.