What Background Plant Could I Use

[aaronnorth]

can you please recommend me a background plant for the right hand side,

light - 2 x 24w HO T5's (1 life glo 6500k and 1 x powerglo 18 000k) 1.2WPG

co2 - 25ppm Nutrafin plant system
nutrients, root tabs every so often, liquid ferts

i have just cut them all to 1 level as you can see, just looking for a background plant

 

[RadaR]

IMO those swords are going to rocket off and take up a huge area.
You really mean the RIGHT hand side? Looks packed.
Good background plants include Vallis, Hygrophilia, Ludwigia, Indian Fern.

 

[aaronnorth]

there is actually a huge gap behind the red ludwigia although it doesn't look like it from pics