So this is my first grow and I am using ffof soil. My lighting is 1000 wt mh at around 23-25 inches away. My plant strain is northern lights special and It's at it's 5th week in veg. my Ph levels are good. I have not used any fertilizer I was kinda hoping to avoid em. But it's only the lower fan leaves affected so far. Any suggestions are appreciated
I see a few little white dots that look like calcium deficiency, which comes along with magnesium deficiency alot of the time. Also I've used FFOF before and when you switch to flowering you will probably run into cal/mag problems when the plants start needing it more. I'd go ahead and get a cal-mag supplement if you dont have one already. but wait for a more pro member for final advice haha =P just my imput.