I wanted to experiment with a nanotank so I bought a 2.5 gallon AGA and a miniaqualight. For substrate I used some sand from a nearby river. I put some rotala, ludwigia and wisteria in it for plants. The light is a 10,000k and an actinic. I will try to find a 6,700 to replace the actinic, but for now I want to see how it goes. If anyone can share there experience with a non filtered nanotank I would appreciate it.