Well my PH atm is reading at 7.8-8 will this stunt my seedlings growth? because at the moment it looks very small for a week old autoflower then again it does have its first set of leaves I have a 2 litre water bottle with a PH @ source is 6.5 But in soil it goes to 7-8 My soil is organic How much vinegar / lemon or other things can i add to make the ph go down?
Flush away the alkalinity with pure water. I've got notes on using lemon juice but they're for the dropper I use & different droppers don't make exactly the same size drops. One drop from my dropper adjusts 3c water .2 acidic.