okay so i went to lowes and got the prices on the lights and the bulbs a medium light up to 150watts is 7.48 a large light up to 300watts is 12.94 and thats all they had the plant light blubs grow lights go for 65w 5.98 120w is 6.48 and i they do have the high pressure soidum blub 400w was the only one i saw for 19.98 soo pretty cheap i guess not to sure about useing the plant grow blubs might not be bright enough to get a good yeild any comments im just trying to help