Well, Im not really on a budget but I guess you could say I dont want to spend like 50 bucks on one bottle. For the filter, I am pushing air threw as it filters out the side of the filter. Im going to have to mod that eventually b.c the air isnt coming out as much as I want it to. They were smelling alot and now its going better, still have some smell. Why do you ask, would pulling the air out be a better idea? Iv got to run to work so Ill post picks when I get home, I just transplanted 2 of them as well into newer better soil. Only 10 hours