Fake plants
Fake plants can look great, but you have to make sure you spend the money on some really nice ones. The quality can change drastically from your cheap to expensive fakes. IMO, the only reason you need fake plants is if you have fish that cannot live with real plants and dig them to death. Other than that, if you have just the cheap ole' light that came with the aquarium, then get yourself a time for $5 at wal-mart, and set it so that your light stays on 12 hrs a day. You can get lowlight species such as crypts, java ferns, and some anubius plants, and even though they won't grow fast, they will be alive, let off oxygen, and fight nitrite and algae levels. There are only benefits IMO