What colour is in the middle?

Posted by enzoleanath

3 Comments

  1. Odd_Calligrapher1359 on

    I had the one for ammonia the only time it’s worked is when I slipped dosing ammonia while cycling my tank . It went straight blue. But didn’t change in respect to the numbers on the chart when the api master kit showed ammonia

  2. Yeah, I stopped using those things a long time ago. I had the same issue that you have. The color just didn’t match the wheel.

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