Kordon breather bag as CO2 diffusion device?
I was bagging up some shrimp for someone today, and something occured to me. I'm wondering if it's been discussed before.
Kordon breather bags are designed to hold in water, but allow gasses like O2 and C02 to pass through their walls. So if someone attached a bag to their CO2 airline inside their tank (with a rubber band or a hose clamp maybe), would it effectively become a diffusion "balloon"?
I haven't actually tried it yet, but I imagine these might be the pros and cons:
- cheap and replacable (vs. what it costs when a ceramic disc goes bad)
- many sizes available, and even the smallest size could be cut down further
- can be positioned upright, on its side, maybe even half-buried (provided you have something to hold it down)
- 100% diffusion (?)
- holding it down
- requires a very good way to get a seal around the airline to prevent leaks
- could pop (?)
- rumor that these bags have been discontinued (there might be other brands, I'm not sure)
What I'm wondering is what happens when the pressure builds up. Does it help force gas through the bag faster? Will it cause it to stretch enough for streams of little bubbles to pour through? Will it break?
Since I haven't tried it, the bubbles may come out visibly no matter what for all I know. Certainly not a replacement for better diffusion techniques out there. Just putting the idea out there.
Last edited by endparenthesis; 06-14-2006 at 11:29 PM.