I plan on growing in my attic where there is a slanted roof about 4 or 4.5 feet tall at the highest point. I'm going to inclose an area 5-6 feet long and 3 wide. First of all, how deep do the pots need to be? I want to have as much height for growing as possible. 2. Whats the lowest temperature in which the plants can survive/thrive? I ask because the outside temperature here usually stays above freezing but occasionally drops below. Will the heat from the lights keep them warm enough or will I need a small space heater? 3. I plan on using 1 400w HPS and 1 400w MH simultaneously. Is this adequate? 4. If heat is not an issue, and I provide CO2 for the plants, is there still a need to ventilate? 5. Should I use a dehumidifier throughout the grow, or just during the last few weeks? 6. How often should I fertilize during vegetative? flowering? 7. I plan on ordering blueberry and white widow seeds. Are these good choices? How difficult are these to grow? I've had some gardening experience before. 8. Approximately how dry should the soil be before watering? 9. Given the space I have available, how big should I let the plants get before initiating flowering? Should the plants fill about half the grow space, or should I start flowering before that? 10. I want to get some seeds for future froms. How long should I let the male(s) flower before removing them to get an adequate # of seeds but not end up with all seeds? Would it be best to cull all but the healthiest/biggest male? 11. When harvesting, should I pull up the roots, or cut off the plant at ground level? 12. How often before harvesting should I stop fertilizing? 13. I know its impossible to know, but about what kind of yields should I expect per plant? Thanks in advance.