How long can I flower my plants?

Have 12 bubble bomb in flowering area and my bud growth has been slow due to lights being to far from my bomb if I lower them how much longer can I flower for?they have been flowering for about 2 months!please any advice!
Thanks!
Rocko

you can flower it until it's done, how ever long that might take..

could you attach a photo please

sure can..

what racer dude said , what do the trich heads tell ya ? clear, milky ,amber or cherry garcia ?