Talkin about the Tube FL's, actually you can get an 18" tube for like 10-15 buck, they do a bit of a larger area than a single 43 watter (in lenght, but you would need a couple to match the wattage or lumens), HD doesn't carry anything over 43 watts i dont think, you would have to get it from a lighting place, check the 1000 lights link they have em and at decent pricing..