Just because your friend bombed out doesnt mean u will. Its not about the watts, its about the lumens and how you use them.
K well his nugs were very few, leafy and trichome production sucked sucked sucked.... I dont have the option of grow tent and ventilation and all that. This is a stealth grow in a closet. Thx for your post though, I have already ordered lights for germination and a 400 watt hps for veg and flower. I plan on growing autos all autos... probably no more than 6 at one time 4 to 6 plants. 55,000 lumens / 4 to 6 plants means plenty of lumens to the plants. Trust me I have researched and researched, this will be in a large closet so the 400 wont heat up a large closet, thx on the panda film I have heard of it but never looked into it, now I will. Im sure with a couple fans and surrounded by panda film mylar or some reflective material the plants will be very happy
I will use weatherstripping to make closet light tight.