| | Small Co2 cartridges?
I blew a ligament in my knee, and have now had a lot more time to surf the internet. I found in a few places people selling these little Co2 cartridges for aquariums, but how in the heck are they used? I haven't seen anything that they mount into, or anything for that matter. I like the idea of having a clean, unseen system and therefore it appeals to me. I don't mind swapping out little cartridges on a regular basis and am therefore okay with that tradeoff. Any idea how folks use these little cartridges (like the ones used for pellet pistols)? Thanks,