W3 - I just re-read your original post. If your plants are up to 18 inches, you need to either do some serious pruning or switch to flower ASAP. You have no idea how much your plants are going to grow. As it is, you are going to have to bend them over to get some decent buds.

Trust me on this. If you go another week with no pruning, your plants will be 3' tall when they start to flower, and that's just not good with a 400w lamp.

On the upside, your strains love to be pruned and will grow into nice bushy plants if you prune them right.

PC :smokin: