great thought...but it is not that easy. if you use that 70wt hps in a standard socket you will either burn the socket. or it wont light up all the way. some lowes do have an outdoor socket that is rated for 250 watts, it is by the garden lights and extension cords. with a little bit of experiance it can be made to work safely. you can use up to a 100 watt bulb in the 250watt outdoor socket. but hell for the 30$ they waNT FOR THE BULB AND THE 20$ IN PARTS YOU ARE GETTING CLOSE TO AFFORDING A LARGE GROW CFL OR FOR A FEW MORE BUCKS A USED 250-400 WATT HPS.