Using 42watt, even if in a smaller amount on your next grow, above the plant will help you keep it shorter. Then all that light can be utilized by a larger amount of your buds instead of just one. I'm sure you have been told before, but LST helps a lot for tall plants, even if just a little. I started out with 6500k 26watts and added 2700k for mixed lighting during flowering. Great results. One 42 watt well placed will grow larger bud than 5 26 watts