API test kit - vials changed overnight?

[Myka]

The colors changed after the fluids sat in the vial overnight? That's pretty normal. Most test kits only have color stability for 5-10 minutes.

[Moogled]

The colours changed after the fluids sat overnight, that's correct

Good to know that's normal! It never happened to me before when I left them over night so that's kinda weird.

GF did another vial test tonight just to be sure and everything is still indeed 0ppm.