gary504504
Premium Member
need your knowledge i've heard the hqi double ended metal halides or cooler(burn less hotter) than mogul single end metal halides,is this true,also heard that if a tank is over 24 inches tall a 400 watt mogul se halide is recommended but a hqi de 250 watt is good on tanks up to 30 inches tall,does this mean de hqi emmits more light?
