Hey guys!
I flushed my 1 gallon pot with almost 3 gallon 6.3-6.4ph water (I watered with 10.5L), and the runoff is still this brown/grey colour, but the strangest thing is, the ph is 7.3.. how?
edit: I use a mist humidifier that recommends boiling the water before filling it, which I haven’t...