Well, the organization I'm suggesting is more of an outline form for writing

1. Lighting
A. Fluorescent
a1. Soil
a2. Hydro
a3. etc.
B. HID
b1. Soil
b2. etc.
C. LED
D. Incandescent


Catch the organization?

Dangit the forum killed my spacing and such - think of it in an outline form that starts with the lighting of growing - maybe you could rearrange by putting the medium first instead of lighting but that apparently creates more categories to sift through rather than starting with lighting and then moving on to the medium