i use a sunblaze 4'-8 tube t-5. 6 are 6500k. 2 are 2700k. i like it. i also, for a cheap, but effective light, screwd 2 4' sho lights to a pair of 2x2s, for a frame. changed out the tubes for 6500k blue ones. total cost 35.00. these are t-12's. the plants can rest up against em, to. not so with the hot t-5's. so maybe, add one, to make it a six tube t-12. for a total of about 65. for six tubes.