nice info and help ppl ,

yes money is not an issue for us to build the grow room, what is a problem is spending so much money every day for it ,,,

so we bought everything and now we are ahead for lights , i know 600 watt is the most efficient and as i said i will use 2 x 600 watt for my flowering room , i am about to buy these
Quality High Pressure Sodium Range . the guy told me is better than a standar HPS since a standar HPS uses 80% of the light is heat.....

any thoughts?