It would 'OK' for the first 3-5 weeks; during the seedling - vegetative light cycle.

For the flowering light cycle; you would need stronger light. (Like it says in the advertisement; the 200 watt purple bulb would be supplement to the HPS light)

Several CFL's bulbs would probably be cheaper and just as effective...IMO....to surround 1 or 2 plants, during the veg cycle.