API kh & gh test kit colors
I just received my order today with this test kit. When I tested the kh I added 1 drop, shook the tube, added another drop , shook tube, etc. The water never turned blue but after 3 drops I thought I noticed a very pale yellow. So added another drop and then definite yellow.
Same problem problem with the gh test, water never turned orange but after 3 drops I could see it change to green.
I guess my question, is the blue & orange so subtle as to not notice it? I guess next time I'll do the test in front of a white paper. I just thought the blue & orange would be more noticeable.