i was thinking the same thing zandor but he started flowering a little earlier than i would and i hate to say it but they better hope that half are male or they will need to build a bigger space. But for now the plants look good. go to cannabis.com home page and scrool to bottem of page for sexing advice and don't get crazy pulling out plants that you think might be male. take your time and waite a day to make sure, they won't pollinate in a day.
must be a first time grow if you guys don't know how to sex your plants, prety nice little set up for a first time grow.
peace, redeyed