Hi all, somewhat new to the hobby, less than a year. Learned alot from the plantedtank forums so far! But forgive me if theres still alot I dont know ... Not sure if you distinguish between a jarrarium vs a pico tank? Here's my one gallon setup in an old glass kitchen container. Added an led desklamp and bubbler, scaped partly with leftovers and culls as well as bb culture from my 5 gallon. Now houses 2 ramshorns and 2 red rilis. Surprisingly well cycled and stable, though I think ammonia may be slightly above 0 (hard to tell with API sometimes depending on lighting) An experimental project for now I'm keeping a close eye on it. Last pic here is a smaller jar probably less than a litre.