and right now you should be using the big bloom, grow big and starting to use the open sesame. You don't want to give them any large doses of Nitrogen at this point, as you'll be going into the bloom stage pretty quick!

Here's the chart,

http://foxfarmfertilizer.com/soilfeed.pdf

and start at week #3 for the doseage and then every 2 weeks move the feeding up, just do not feed every other watering, do it maybe every 3 watering.