Not as many as some, but certainly my share from a single 400 to 3kw in one space (I've done 400, 600, 1kw, and 2x600 in vert, some bare, some with tubes, 2x and 3x 1kw in horizontal, along with single 400, 600, 1kw but always in vented hoods horizontally). If you want to go by square footage of...