Yes, I do know about the youtube channel called "Life In Jars" and also about the sealed glass "ecospheres" that you can buy. I posted this topic to talk about aquatic, self-sustaining, sealed or unsealed mini ecosystems. In the past, I have created sealed aquatic ecosystems with live plants and thousands of mini aquatic organisms relying on each other. I have even kept glass worms, scuds and snails alive inside for periods of time. If anybody else has any experience with these, please comment.