salt build or burn?

sourdieselyumyum

Well-Known Member
Growing in coco 2 gal pots using cns17. Been watering with a mild dose These last few waterings ppm going in is 400 coming out between 700-900 I have been adding flora kleen to the mild nutrient solution this is just showing up oN the bottom leaves rest of the plant looks great. Just looking to see what u guys think. They are day 20 flower
 

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Those lil white spots look like mites to me...check the underside of your leaves for small critters with a strong magnifying glass...
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