i'm def no expert, but from what I have read. If that is tinfoil it may be causing your brown spots.
jke55 Reviewed by jke55 on . how long should i veg these have been going 24 hrs for 22 days. is there an average growth or time to switch to 12 /12? also some of the leave tips are browning and drying out, i changed the water and nutrients any other ideas? how do they look? Rating: 5