Meggie's right. Tie your Anubias to a rock OR leave it to float. It makes a great Betta hammock. It thrives in any water and any light except very bright. Comes in small, medium, large and long-leaf. Doesn't grow very fast, so it's not a big ammonia eater. But you never have to trim it.
Can you tell it's my favorite plant?
I like Wisteria a lot, too, for many of the same reasons. Likes to float and makes great topcover, a feature that is not used often enough among the tanks I've seen. Also a good hammock.
I've had two double-divided tanks (with the filter and heater in the middle). Best way to go for a lot of reasons, imo.
Regardless of the wattage, a color temperature of 6500K is best for plants. It should say that on the package.