Oh goodness, it's so hard to narrow it down--all of those choices sound great! Haha okay, so now that I understand that duckweed is the glitter of the plants, then it's probably not the best idea As far as preference, grassy, and floaters sound pretty cool!
The water is 4.5 inches deep on one end, and there's a smaller portion (seperated by a dam to create an additional waterfall...or water trickle haha) and that portion is about 6 inches deep. Those measurements are without the inclusion of river rocks, though. Ultimately each end will be shallower I'm sure. I'm using a Reptisun 2.0 bulb, and a basking light (low heat). It seems pretty bright to me.
Thanks guys! I can always count on this forum for helpful advice!