i hav a tekk light t5 HO 4 bulb 48" fixture and was wondering what bulbs would be best to use for plants? i was thinking maybe 2 6700k and 2 10,000k but i was wondering what brand would be best? i currently hav two 48" coralife 6700k bulbs but they are only 28 watts each, and i want four 54w bulbs, unless it doesnt matter? any advice on what brands or types of bulbs i should get is appreciated