i have 4 plants growing. the leaves are light green on all except 1 where they are green. some of the plants have yellow spots on the leaves and one has some brown spots. i know it is most likely a nutrient deficency but can some one tell me what i need to do to fix the problem?
Sounds like to much Nitrogen....you didn't really give to many details.... more details lets us help you . From what you told us I'd say flush them...how old? strain? state(veging/flowering?)...ect.