PHello Canna Fam. 
 
	Here looking for advice, 1st time indoor grower. Have experience with outdoors.
 
	I want to set up a grow room that is 2m by 2m. With about 6 to 8 plants in there or can I put more.  Not too small. 
 
	The question is , how much do I need? Looking at buying HPS 600W. Would one cover for all stages of growing? 
 
	Also I want to feed organically? What experience has those who have tried it, gotten? 
 
	How does one generate CO2 ,cheaply?