brownish, dark yellow spots on plants?

hey guys... last two days i noticed these spots.... there not rust fungus or anything.... just puzzled, dont know if its a lockout, needs nutes, or nute burn. about 2 weeks ago i transfered from solo cups into 3 gal pots, into FFOF and they have been doing great... have been PH testing my soil to 6.3-6.8 region, and havent started feeding yet because i hear FFOF has nutes for a while....

strains are WW x BB and sharksbreath, just wondering what the spots could be? whats my best plan of action? thanks guys!

Howzit. This could also be a Zinc Deficiency - I stand to be corrected. Double check your Nutes and PH and go from there. Deffo looks like a deficiency.

If in doubt here is a help full thread on this topic - https://www.rollitup.org/marijuana-plant-problems/488004-guide-nutrient-deficiency-toxicity.html.

More experienced growers throw your 5c!

So should i start a 1/4 strength nutrient regime my next feeding? I have the flora series nutrients.

Anyone Else have any input?

im hoping to take care of the issue asap, on my next watering which is tonight, so any input ASAP would be greatly appreciated! thanks guys