HELP weed leaves brown tips! first time grow

Tips, Tricks

1. ph 5-6
2. so, it was a pH problem? right
3. rite ph levels fixed it if its just on a few leaves its expected to happen as lo g as your plant isnt getting coverd in brown leaves
4. proper ph in the water
5. Bro, I have the same issue. what did you do to fix it? thanks man.
6. burning tips of the leaves is a heat burn there curling up and a little nute burn 
7. i jus got a ph meter i was using rain water
8. What kind of water r u using? If it,s RO it could be Cal/Mag Deficiency.
9. this could be heat stress if its to close to a light or your over feeding and burning them try less nutes if tempetures arent the problem and giv them good air circulation