hey thanks everyone for the replies and input. We do have a carbon filter running at the mo as the lowryder#2 we have in flower are starting to smell quite a bit. The Co2 thingy is something i never even thought about to be honest, i will be pricing one up once i write this post. I don't really want really tall plants to be honest, but i kinda wanna experiment with one maybe just to see how far she will go lol. We kinda started growin small but it's taking over, plus we think it's gonna work out better for us growin our own as the stuff we are buying lately has been really poor quality, especially the solid (found bits of plastic in some a couple of weeks back) hence you smoke more, hence more money to lay out.