I wanted to add, that 400 watt for $35 or whatever at HD is not a HID, it is a Halogen, which is also crap, and not worth growing with...
Throw away the old school light...
When you have an extra $13.00
go buy two 6500K CFL 23 watts--$9.65 or so...
buy a single to double screw in light splitter --$2.47 or so...
And use that on your plant, then every time you get another $13.00 add another light pair...
Use the clamp on work shop lights with the dome reflector add another $7.50...
If you can not afford $23 towards your grow every pay period, then quit your grow now...
It's ok to start small, if you start smart...
Good Luck...