Ok well remember the fert rule you can only give ur plants 1/4 of what fertilizer labels reccomend and as for when and what to feed them... NO NUTES until week 3 and on week 3 add your nitrogen based fert (blood meal is rich in nitrogen) at 1/4 strengh, mixed well into the soil. Then ur pretty much set until you flower... Just do the same except add a high phospurous fert (bat dung, or bone meal) at 1/4 strengh when u flower.

Cheers!