Did this stuff start as a white powdery look if so this might be fungus Botrytis ( if so remove all of the damaged leaves and spray the plant down with some 1/2 milk with 1/2 water solution)
also could be a chemical burn so after you try that fungus solution try flushhing the plant if that didnt work
and the last thing it could be is root rot which is possible since i dont see any perlite in your medium and they are only 2 ways to stop root rot if it isnt to late 1 is to add root rot fungicide and when doing that
lower your ph below 6.0 to prevent spreading and the second solution is to try and aerate the soil by transplanting
P.S. wouldnt flushuntil you try the fungus test so try that then if you see it start to appear try flushing and if you dont think its a chemical burn then try teating it like root rot
growhand420 Reviewed by growhand420 on . noob grower hey guys im really new 2 this so i thought id post a few pics of my two plants. the bigger of the two was planted around about the end of october(ish). iv noticed that the bottom leaves are starting to droop a bit and some of the leaves have gone a bit crispy and are off colour (see pics). the smaller one was potted about 2 weeks ago. do you think they're looking healthy? ps. they look a bit yellow in the pics but thats because of my camera lol cheers in advance for any help! Rating: 5