Blackwater Floating Plants

Hey everyone, I'm looking for some suggestions on floating plants I could keep in my recently set up 75 gallon south american blackwater themed tank. The tank is almost done cycling and I'm about to start stocking (angels, cardinals, cities, etc.). I like the look of Amazon Frogbit but read that it can't get water drops on top of it's leaves and I'm using HOB filters. Are there any other good South American floating plants? I would also like something that spreads and filters out a good amount of light (I'm using a single strip LED fixture equivalent to about 64 watts).

Also, any good suggestions for online places to buy plants?

Thanks.

 

Dwarf water lettuce is easy for me and i have a hard time with plants. It grows runners super fast. It has little hairs on top of it's leaves and the condensation underneath my lid doesn't bother it at all. You can stuff a piece of sponge behind the outflow lip of the HOB so the floaters don't get caught behind it.