I have been running the nirvana masterkush for about a year now and I love it,I have started taking notes on everything and gonna work more on a preticular pheno i have found I like alot.My question is "Nirvana's- Masterkush" is a F1 right? I have found this information awhile back but lost the file on my computer and cant come across it again.I also have the packet of seeds i have put up marked f1.Like I said im almost positive thats what they are but I wanna see if anyone has more knowledge on them then I do and can verify my question for me. thanks alot guys hope someone can help me,stay high and keep growin!