Just one 1k? You can't light up a 15'x7' canopy with just 1k. Try 6k. Flower now and get 1-2 oz per plant. Veg for 5 more weeks and double or triple that.Ok guys the bulbs are 1000 watt hps all organic nuts with a co2 goin as well I had my buddy post this for me I'm just curious to know what id get if I put them into flower state now how much per plant estimation is all I'm asking for please and thanx all lights are 1k watts