that's amazing. you have your own thriving ecosystem! pictures!Nothing.
have a 7 year old tank that I have not even cleaned the glass on for over two years.
It's just simply a 1 tube flourescent 10g planted with guppies from the original cycle trio. Substrate is just play sand.
All I do is replace the water the evaporates and add food every day. when gone on vacation I don't even do that.
No mechanical filter, no circulation not even an air stone.
So like I said:
Nothing. *Glasses*