, and like the design a lot (it's a lot smaller than you'd guess from the pictures.
I ignored the included directions to use tank water and mixed up my own 4kh solution (distilled water & fresh baking soda), verified per my kh test kit to be between 4-5 (barely perceptible change on 4th drop, fast and strong change on 5th - perfect! damn I'm good. lol jk, I just followed directions).
I filled the drop checker with my 4kh solution, and added 5 drops of the "co2 test solution" included with the drop checker. I was surprised to see that it was yellow; I was expecting it to be blue (I read somewhere that it is bromthymol blue for the pH test). It looked more like the color of my high pH
After adding the 5 drops, the solution turned green. At first I was like YAY!
but then I was like... wait. It's supposed to be green when there's ~30ppm co2 in the water. Should it be blue right now?
I used distilled water off the grocery store shelf - it was not uncapped long before I had my final solution in the drop checker.
Any theories? co2 in the distilled water? don't use the included reagent, instead try the pH test solution out of my kit?