This is my first WW grow and also my first time using brita filtered water. All started well in vegging but during flowering the leaves started to yellow.
I diagnosed this as a magnesium deficiency, as I know the organic food I give her is good I then assumed it must be the PH from the filtered water; I only have paper test strips and am a bit colour blind!
Last week I flushed her 8ltr pot with 16ltrs of tap water, I think the PH is between 6-7 but could be wrong. Yesterday, I added a quarter teaspoon of Epsom salts + regular nutes to her 2ltr watering to give her a boost.
Have lost a lot of lower leaves and also some pistles are turning orange, do you think I've done the right thing? When should she start showing that the extra Mg has worked?
How does she look for 30 days flowering?
Thanks