c02 injection

So guys my room is 12x13 and I'm looking into pumping some c02 in there. I have absolutely no idea what I need though. Is it possible you guys can help me and send me some links to kits and or generator/burners i could use? Thanks in advance

Hi guys. This question is aimed towards the experts. I have decent experience myself so don't assume I'm making any newbie mistakes lol. pH and RH are perfect, as well as all other aspects of the room. So to cut to the chase.. my plants are starved of C02 and I believe it's killing them. I have...