SME,
I appreciate your input. Got a quick question. You stated you need 40 watts per square foot, so a 1000 watts would cover 5x5 space correct? When calculating LED do you use the actual draw watts or calculated watts? An example would be you have 84 /three watt LED's in a panel the calculated watts would be about 250 watts. So you would need 4 panels.... Yet the actual draw would be around 130 - 140 watts depending on the fan configuration. I honestly don't think that you can compare "apples to oranges" LED's are more spectrum specific. I have run 600 watt HPS and 520 watt LED. Running the same strains you might get a 10 % weight difference. Where LED excel is in quality of the medicine. The problem I see is the density HPS seems to produce denser nuggets. I believe this is due to the lack of penetration or the heat the HPS provides. I have been searching for a HPS / LED combo mix. Was looking to see if this can be proved out. Instead of running the HPS for the full 12 hours,run it say 3 hours off then 1 on then 3 off then back on. You actually run it 4 hours in the 12 hour period. Not sure of the affect on the bulb starting and stopping it like that. What do you think?