how many days/weeks will it be before i notice a difference my light is 400HPS i just put the plants under it i want to know how long it will be before i see any change in growth the plant pot is far away from the light theres not much heat where they are but beleive me there is planty of light shining down on them the light is blinding as soon as i open the grow room door my bedroom lights up there is plenty of light trust me on that its Bright as fuck!!!!!!! any ideas how long it will take to notice anything???? i dont mean budding i just mean height difference am a little skeptical about how a HPS light grows plants since they are made for boring street lights im also abit worried that i could be wasting electric as i am payin for it its not wired it is costing me money to run the bloody thing