i tryed to show my missus how to mix A and B coco nutes for flower when i had to get an operation done once i was like now just mix up 30mls of A and B like i showed you before when i came back dead plants.
i said show me how you mixed up the flower nutes when i was in hospital, so she pours 30 ml of B from the flower bottle, im thinking all good she remembered then she picks up the same B bottle of flower nutes and tips in another 30 ml stirs it 
and forget teaching her about Ph
she cute tho