That's right. The cories don't need algae waffers. They DO need some other kind of sinking food such as catfish pellets and will also eat any bits of flake that sink to the bottom.
As for lighting, a little lighting in the tank is better than nothing - both for the plants and for viewing purposes. It's deffinately not going to be too bright or over-powering. The light has to go through the water and actualy looks a pleasant white shade. Go take a look in the pics section and you'll likely see what i mean. It's not overpowering at all. You should get aquarium lighting - your LFS should sell them. You could use pretty much any lighting tube but it does need to be made for aquariums for safety reasons and you're likely to need more than one if you want to fully light a tank that big.
As for lighting, a little lighting in the tank is better than nothing - both for the plants and for viewing purposes. It's deffinately not going to be too bright or over-powering. The light has to go through the water and actualy looks a pleasant white shade. Go take a look in the pics section and you'll likely see what i mean. It's not overpowering at all. You should get aquarium lighting - your LFS should sell them. You could use pretty much any lighting tube but it does need to be made for aquariums for safety reasons and you're likely to need more than one if you want to fully light a tank that big.