Listen bro, growing in your 'rents house without them knowing can be very bad, your parents could lose their house and go to jail (not you, its in Their house remember) growing takes 4 months or more (90-100 days if qualified), do you think you can hide it from them that long? 2ndly Growing takes cash and know-how, lots of both; 2 24w t5's won't grow weed, ok maybe one plant, might get you a spliff, total. 3rdly, I think if you wanna mess with this hobby, go find some woods or a park or somewhere inconspicuous and plant them there (after germination of seeds) go check on them every few days, let them live wild, see what you get, trust me you'll learn a lot and if you get caught, you can say "I just stumbled on them...". Please, Please do not grow in your parents place, you don't know how handy their trust can be.