Patrice
Aquarium Advice FINatic
When i test the kh and it turn (blue) to (yellow) do i count the last one has 10 ppm or 5ppm.
When i test the kh and it turn (blue) to (yellow) do i count the last one has 10 ppm or 5ppm.
You count the last one as a full drop. But really, liquid kits are more accurate, but they probably aren't accurate withing 5 ppm, so don't worry about it.