I just got a T5 H/O 4ft f lamp fixture for 225! and it came with the option of 4 6500k bulbs, or 4 3000K bulbs or half half, 3000 is for fruiting flowering, and the 6500 is for growing and seedlings, this things puts out a total of just over 20,000 lumes, and and the replacement bulbs were 6.80...