Yeah, it's a matter of opinions on decorating but we might as well share our opinions, they might hear something they like... Personally I like the look of driftwood and of course coconut shells... Of course plants... corvuscorax has "Healthy Plants = Healthy Fish!-- Takashi Amano" in his signature... I agree with it completely. And the plants that madasafish mentioned are really the best choices for a low light tank, but I didn't see lighting mentioned... Some people use fake plants but I can't stand them... just my opinion... As far as background, I don't use one but that's because my tank is viewable on all four sides. For your tank I would suggest a background to hide the wires unless the tank decorations could do that well enough. As far as picking a background goes I would do something solid. Those scenery backgrounds can be cool but a solid background goes better with just about anything AND in my opinion if the inside of the tank or anything starts getting dirty, a scene looks dirtier than a solid background for some reason, to me at least... And you can use just about anything for a background... it doesn't have to be one of those things at the pet store that cost10-20 dollars... well, those are my thoughts so far...