Northern Light BBud showing brown spots and edges!

[LaylaC]

Hi guys is me LaylaC again!

Here is my setup:

Light: 2 x 880W Full spectrum LED

Organic Soil Mix:

Sungrow no.4 (Peat sphagnum perlite medium)
Worm casting
Azomite
Fish Meal
Bone Meal
Blood Meal
Dolomite Lime
Epsom salt
Potassium Humate
Chitin Meal
Bokashi

Liquid Kelp
Liquid Vit B and their buddies xD


2 of my Northern Light Big Bud starting to show deficiency. Anyone could share their knowledge and wisdom on this case? Much appreciated and grateful for being part of this community.

Many thanks in advance.

[Mr.furley]

I see small white spots, have you checked really close for bugs?
if it's not PH related then being that it's on the lower to mid part of the plant it would be a mobile nutrient deficiency, my guess is magnesium. Do you add Epsom salt to your water or you're soil?

[LaylaC]

Thanks Mr.furley for prompt reply. Sorry i forgot to mention i spray DE powder religiously every week maybe thats the white powder. I checked for bugs, only some gnats but using BTi and is under control. Yes they were suffering for Mg def. I guess is starting again. I use Epsom salt. What would your recommending dosage for Epsom salt per gallon? And application frequency?