For comparison, I am adding a 90W quadband LED light in an area that isn't really getting enough light. My plan is to start with the light at the roof (gotta love the low waste heat of LED) and work it down toward the bench over a period of weeks until my plants start to look happier. It will be interesting ot see how everyone does with a blend of quadband LED and coated MH. Depending on how things go, I may put it on a short track.