Wanna buy some? I just happen to have a bag laying around. (Like that's a surprise..lol) seriously though, most decent pet stores should carry it. You already know that i use the fluval nano. Just remember, it was designed for small tanks, mainly shrimp tanks, so they only provide bio and mechanical filtration. No chemical filtration (charcoal, ammonia killers,ect). But, you should never need chemical filtration anyway.

Remember, if you load the tank of with microfauna (springtails and isopods), the tank will tank even less work.