nope. co2 is heavier than other air components and will tend to pool on the floor. just because the fan is pulling in air doesn't mean it's pulling more co2 than the other gasses in air.
and carbon filters catch aromatic organic compounds that are chemically attracted to activated carbon...
you can flower anytime you want. the longer you veg the bigger the plant and the higher the yield. but - you're out of space and they grow a lot in 12/12 so i'd start right away/
ok, technically how he did it works, but it is not the optimal set up. by putting the filter on the outside and pushing air through it you are leaving all of the internal air smelling. any leaks in the box will smell like crazy. all commercial carbon filters are built to pull air through them.
impossible to give an answer without knowing more about your closet. it could be as simple as sticking the fan in an existing vent opening to as complicated as cutting through the ceiling and routing ducting around obstacles.
is there an existing vent in the closet anywhere (floor, wall or...
more important to have exhaust fans than intake fans. switch them around and just use a hole for intake. have the exhausts at the top of the box and the intake opposite at the bottom. temps should end up within 5 degrees of your ambient temp
depends on how much you want to yield. the 150 watt light has about 16,000 lumens and the 250 has about 28,000 lumens. you want about 14,000 lumens per average-sized plant.
you are eventually going to need more light. an adult plant needs about 75 actual watts of fluorescent light to make a good amount of weed. also, only female plants produce usable amounts so you're better off planting more than one seed to increase your chances of having a female. you don't...
the seed pods are extensions of the bud and the pollen sacks are at the juncture of the node. squeeze a pollen sack and you get powder, squeeze a seed pod and you get either a seed or nothing.