for a 5x5 space you want a 1000watt HID light.

More light = more yield (given that everything else is in order).

With that said; if you are set on a 5x6 grow area then use a 1000 watt light for maximum yield. Also, grow more than 4 plants. That is a huge waste of space and so much light that would hit the floor that should be covered with canopy instead to make as much usage of your electricity as possible.

Otherwise I would suggest a 3x3 grow space and use a 600 watt HID. That should be perfect for 4-6 plants in 5 gallon containers.

Good luck :thumbsup:
daihashi Reviewed by daihashi on . Which light for this room????????? Ok so the room is around 5x6 ...Hydroponic setup,4 plants are going to be in the room(well closet).This is only a flowering room. I am trying to decide between a 600w or 1000w HPS. Now im not to sure if ventilating the heat will be a big problem or not,im thinking that it wont be,but lets keep that in mind aswell. So my question's Will i save alot more power and energy usage with the 600 opposed to 1000? Will i have alot easier time keeping the heat down in the room(and venting it Rating: 5