According to The Urban Grower ......1800 ppm is optimal in all spaces......for an approximate increase of 35% on yeild..... happy growinghttp://www.urbangrower.com
digdog Reviewed by digdog on . Any1 know the best way to make C02 who knows the best way to make C02 using household stuff on a budget all opions and thoughts appreciated thanks :) My plants are about 29cm's i think thats about 14inches not too sure, there 6weeks old. I wannaincrease the c02 to help them grow ! :D Thanks! Rating: 5