for my most recent grow i started using yeast and sugar mixed with water in a 5 gallong bucket for a co2 boost...its workin great besides the fact that it runs out in about 2 days n im pretty sure most of it is getting wasted and i dont have an air lock or some kind of vaulve system...besides that the plants are growing much more rapidly but i was wondering of how to make my methods more effcetive...any suggestions?