Thanks for the input! Good to know about the crypts, I don't have the vision of what things will look like when they grow. I want something to grow low along that back plant line, fill it in a bit. Is there something other then crypt parva or dwarf sag that would do alright in low light?
I also like the suggestion of something red. I did have some red rotala, but it totally melted and wasn't worth saving when I changed the substrate. Any suggestions for something that might be okay?