Well up until last night I had less than half a wpg
florescent light on my 25 and it is growing sag, moss (close to the top), java fern narrow leaf and normal, cardinal plant, water wisteria and rotalla rotundofollia growing fine in it. Oh! And anubias! So yeah you can get away with plants with no special lighting or treatment other than maybe root tabs but those are cheap and easy. I'd look into how to plant and or tie down anything you choose though because when I first started I planted some anubias and it died my java fern didn't do so well in it either.