LOC NAR1958,
I have a fan blowing on low speed. Only have the one type of light. (actually two, one for each setup) Mylar around the setup.

From the website where I purchased the light:
You can position your plant within 1 inch of the bulb for TOTAL LIGHT USAGE by your plant. It's perfect for small enclosed gardens as well as open gardens. Can be hung above your light with our optional 12ft socket cord or you can really MAXIMIZE your light by mounting it in our NEW batwing reflector! It's the most affordable reflector of its kind.
- 8000 lumens output
- Cool operating temperature allows placement within 1 inch of plants!
- 2700k "RED" spectrum (similar to HPS), for general growth and blooming.

As far as harvest- The more the merrier. I want to keep the plant height no taller than 3 feet. Is three feet reasonable or obtainable with the light I have now?

Do you think I should get another light or add a light? What will MH or HPS do for me?

thanks for the help!