C99 we grow has rock hard buds when dried. Like golf balls. Being a short season sativa dominant, C99 likes all the light it can get.
IMHO it needs stronger light, or the lights are to far away. Whats the color k of the lights? Not enough Blue will make them stretch.
Maybe to Hot?? Hot, and needs more light??? Whats PH. What/How Much/How Often are they being fed?
CFL really lose a lot of light when not really close to the plant.
Even 1000w
Gavita/
Hortilux HPS loses power quickly/in a matter of inches.
Inverse Square Law.
Light and other electromagnetic radiation[edit]
The
intensity (or
illuminance or
irradiance) of
light or other linear waves radiating from a
point source (energy per unit of area perpendicular to the source) is inversely proportional to the square of the distance from the source; so an object (of the same size) twice as far away, receives only one-quarter the
energy (in the same time period).
More generally, the irradiance,
i.e., the intensity (or
power per unit area in the direction of
propagation), of a
spherical wavefront varies inversely with the square of the distance from the source (assuming there are no losses caused by
absorption or
scattering).
For example, the intensity of radiation from the
Sun is 9126
watts per square meter at the distance of
Mercury (0.387
AU); but only 1367 watts per square meter at the distance of
Earth (1 AU)—an approximate threefold increase in distance results in an approximate ninefold decrease in intensity of radiation.
