im blinded,fan will do good, instead of tryin to bush, you cut the side branches off and concentrate the light on the top cola.the hi 1s r bigger and i say better,sreading the light aint always good. c02 cheap skate u r, little sugar,little yeast,warm water in a bottle,hole in top,little plastic pipe feeding c02 nr your plant.i use on my seedligs,that 1 i posted 2 weeks old had c02