so i got an indoor growing book and think i want to do a passive hydroponic system with a wick style set up. i figured i would do some lowrider plants since my space is pretty limited, but after the initial 8 to 10 week grow i want to have a two week stagger so i can have a steady supply every two weeks. any help with a passive hydro wick system would appreciated greatly. also i was wondering about different light setups(i heard that CFLs dont yield as much because they don't produce as much heat, is this true??) and i was also wondering about good mediums for a hydroponic system (i read that gravel could be used as a sole medium). Thanks