My "grow room" has been re-configured from a 6ft x 6ft x 8ft room with 12 4ft 2 tube fixtures verticaly around the sides and 6 26watt CFLs from the top to a 6 ft triangle with the lighting hase been reduced from to 10 4ft 2 tube fixtures verticaly around the sides and 6 26watt CFLs from the top. I am currently using the 5000K "sunstick" tubes. Basicaly I reduced the size of the grow room by half and the total light has been increased by 30%. This is what I will be using for my next grow. The last grow turned out great.