I was thinking of getting some frogbit for my Flora, but was worried about it stealing the light from the other plants. Really digging that ring idea with the tubing! I'll be doing it that way if/when I add some to the tank.
Nice tank you have there. Especially loving the Betta and your floating plants. I have a fluval chi and since the LEDs are submerged I might consider putting some of those. There is some environmental light. You reckon that would be enough??