Yellowing of leaves, brown burn marks

1)


2) Growing indoor or outdoors

Indoors, 400 watt/hydrofarm

3) Watering schedule

Manual water, every other day as needed

4) Growing Medium

Cocoa fiber

5) What stage of growth

Started on June 20, now July 24th, Vegative stage

6) Extra Information

The only nutrients I am using is Diamond Nectar by Fox Farms, and I am using the recomended amount.

You might have a fungus like Powdery mildew or Downy mildew. Spore can spread to other plants quickly. A product like seranade will work. Remove plants from grow room, clean grow room to remove left over spores. Then put treated plants back in the grow room. Use it once a week til the problem goes away. Also Pyrethrin fogger Bomb will kill any thing moving.