Mars is junk. If you want to go with LED, do it right and go with COB's. You will not save money on your electrical bill by using Mars lights. They use Epistar diodes mainly, and they are about 20-25ish % effective, which is actually worse than a quality hps bulb. Heat will be easier to manage compared to hps, but that's about it. Mars lights are dirt cheap, and you get exactly what you pay for.