I have two unit 5 month old 48"DLX 2MH 250watt 20K & 48'' FLUORESCENT 110W VHO actinic.
2 - Metal Halide bulbs . For tank height 24" to 36" use. MH 250W, 2 - 48" Super Actinic Blue 110W Very High Output Fluorescent Bulbs, 2 - 4" fans, High Quality electro-white reflector, Black Aluminum...