Seems like this thread needs a bump. No pictures, but I keep trying to find a not too high maintenance way to keep it alive. I thought about an LED inside mesh holding it down (for a ball) but that seemed like way too much work. Do they make waterproof trimmers like the ones barbers use?
Those are some great riccia pics. I have this small nano in the bedroom. Really simple little scape, but the Riccia is growing great with no filter, no co2, and I get pearling after a few hours of afternoon sunlight the rest of the time (interesting) it's only lit by the little Rio Sun LED.