the c02 bucket is too expensive but clearly valuable. so, you should consider this if you're on a budget like i am!
for c02 just rig up a paint bucket +lid (home depot), seal a tube through the lid and mount any air pump inside(google product search), get your dry ice(local grocery store) bubbling and seal the lid. attach the tube(pet/aquarium store) that is coming out of the lid (and is hooked up to the pump inside) to the active aqua flexible curved air stone (amazon) and loosely guide it around the rim of the net pots, or rig it just above using some fishing line, or what have you and plug the other end of the air stone with some tape or glue. the small tube will allow for adequate pressure to build and the pump will bring it to the awesome flexible air stone putting a constant flow where you need it for as long as possible while the pump will ensure you get every last bubble in the bucket.
this is exactly how the co2 boost bucket works, but it's a bit more refined. their bucket is supposed to last around a few months. granted, you're going to buy a lot of dry ice, but then again, it all has to go around the plants before it is totally gone. I've been messing around with larger hoses and it's just too high of a flow. I think the air pumps small-guage tube should mean it's puting out c02 harder and at a greatly reduced rate. the c02 booster uses something as small.
for c02 just rig up a paint bucket +lid (home depot), seal a tube through the lid and mount any air pump inside(google product search), get your dry ice(local grocery store) bubbling and seal the lid. attach the tube(pet/aquarium store) that is coming out of the lid (and is hooked up to the pump inside) to the active aqua flexible curved air stone (amazon) and loosely guide it around the rim of the net pots, or rig it just above using some fishing line, or what have you and plug the other end of the air stone with some tape or glue. the small tube will allow for adequate pressure to build and the pump will bring it to the awesome flexible air stone putting a constant flow where you need it for as long as possible while the pump will ensure you get every last bubble in the bucket.
this is exactly how the co2 boost bucket works, but it's a bit more refined. their bucket is supposed to last around a few months. granted, you're going to buy a lot of dry ice, but then again, it all has to go around the plants before it is totally gone. I've been messing around with larger hoses and it's just too high of a flow. I think the air pumps small-guage tube should mean it's puting out c02 harder and at a greatly reduced rate. the c02 booster uses something as small.