50 cm by 50 cm by 110 cm
For us imperialistic measuring cowboys:
19.7 inches by 19.7 inches by 43.3 inches
or
1 1/2 feet by 1 1/2 feet by about 3 1/2 feet tall.
You're working with 2.25 square feet floor space and 7.875 cubic feet of total grow space.
What are the dimensions of the CFL light? Does it have a dew guard or reflector?
What is the height of your pot or growing container?
Gonzo is correct with the size of the pot affecting the size of the plant; did you have a pot size picked out or that you are considering yet?
Without knowing some of these other variables, it would be difficult to be able to recommend more than one plant. More plants = more maintenance, there's no arguing there. Also, to respectfully disagree with Gonzo, I don't believe having more plants would give you any more control over the height of the plant than having just one plant in there. In fact, it could very well be quite the opposite depending on the particular phenotype that you get with the strain.
Limiting the size of the pot and using methods such as LST (Low Stress Training) would give you far more control over the height of the plant. If you haven't ordered your seeds yet, many seed banks will have details on the average height of the plants (short, medium, tall, etc.) That doesn't mean you can't try out a strain you really want; just know what it could be capable of (again, you can limit height with these other variables.)
Obviously factor in these details when deciding how many plants to grow, you need to go with what you feel safe and comfortable with, not what we feel good with. :karma Cloud:
As for your carbon filter, are you planning on doing a DIY filter? Store bought? Inline? Aquarium filter? Please give details! Can you find out the CFM rating of those PC fans? Or if you don't know; do they have a model number on them? Would be super easy to find out.
Would love to see some pictures of your equipment; even if you haven't built the box yet.
We'll get you setup bro, lots of good answers here already! :smokebuds: :karma Cloud: