all i have to say is running 20-1000 watt hps is going to rape your electricity bill costs, not to mention to extreme amount of attention you will have to give 400 plants. it is hard to grow 40 plants, let alone 400.
princedapimp4 Reviewed by princedapimp4 on . flourescent for vegatative stage followed by hps for flowering would there be a big problem running flourescent lights for your vegatation stages and then switching to hps for your 12/12 cycle? im trying to find a way to not kill my electric bill. i havent really heard of anyone doing this but a friend suggested it would be a good way to get around a big grow. lets say 400 plants in 2 20x20 grow spaces. they would be light-isolated from eachother during the flowering stages. you would be 24 hours on during veggie stage for all 400 under the flourecsents Rating: 5