Hell with 250 bucks you can make things happen easily and shouldnt be using just a 13 watt light. Buy a few CFL at first to start the grow, like 4 42 watt lights or more there pretty cheap, then save some extra money up for nice light setup, 400 watt hps will grow your plants out nice for flowering, then use what left over for some nutes. With all that you can you can start doing a SOG and push out 4 plants like every month or two. right now i'm just using a 29 watt CFL on one plant and it's working just fine and dandi.