i have a 400 watt hps for flowering these are just for veg. they are all seeds(bag seed)Ive got 12 plants all together4 that are 2 weeks old and the rest are a week old. i start them in party cups. im trying to get a perpetual grow going with the 12 plants so i don't think ill be vegging for very long. i figured if i could put 2 in flowering every 2 weeks that if all works out it should be perpetual.