9x9 would need about 4 to 5 1000w's to get decent coverage with the 50W's per square ft rule of thumb.
Any how, buyying 2 1000w's the lights would be the cheapest part most likely, after hoods, possibly air cooled or cool tubes, substantial inline fan, scrubber, possible AC unit and other misalanious items, nutes and so on you would be thinking that the lights were the cheepest part of the set up.
Adieu
BlueBear Reviewed by BlueBear on . HPS Lamp Question.. Hi everyone.. Starting to set up a grow room, was thinking of 2 1000w HPS lamps to start with, any ideas on how many plants that would cover, or am i better with one Metal Halide & 1 HPS ? Thanks in advance for all the help :p :thumbsup: :) Rating: 5