please anyone help me figure out what is going on with my baby ... i am a first time groweing i haVE HER UNDER A 400 W LIGHT with a fan so air flow isnt a problem ...i DONT over water and dont over feed ( if anything underfeed) it never gets very cold where she is ... i cant figure it out ...its just the bottom leaves that turn yellow than the tips go brown ..( should i cut that little bit of brown off) ...if anyone can help me i would be greatly thankfull..:0 happy high times everyone