Hushpuppy said:Here is a little science lesson for you(not tryin to sound condescending). Plants use co2, water, and elements from the ground to build the compounds that they use to build their structure. Many people think that plants get most of their building products from the nutrients in the soil. The truth is that all of the compounds that living organisms use are carbon based. Plants get this carbon mostly from CO2 that they breath in.
Plants then do chemical reactions within their leaves to break down the chemical bonds of the different molicules of all the elements listed above and to build the compounds that they need for growth and building the flowers that we so enjoy. The energy that is needed for these chemical reactions is supplied by the high output lights that we use, or by the very high power sun rays. This energy has to be captured by the leaves of the plant in a process known as "photosynthesis".
The big fan leaves are like nuclear power plants for the plant itself. Every leaf on the plant, and even the the green skin on the stems of the plant have "chlorophyll" that is used to capture this energy and put it to use. But the big fan leaves are like solar panels as they are the most efficient at capturing the light energy for powering the growth of the plant.
This is why having high quality light sources in the right spectrum is so important. MJ is a high energy plant because the flowers it builds takes a lot of material, and the very specialized chemicals that are so very important for our use(THC&CBD) are complex chemical compounds that also take a lot of material and energy to build.
In short: the more green leaves you have equals more buds the plant can build