The other option of course is to drain the tank all the way down, glue (silicone) whatever fake plants you want to the bottom glass wherever you want them, then refill and there ya go. I've grown anubias on drift wood before and it looks great, needs almost no light or care. +1 for that idea. Pothos are GREAT plants to put in the water for reducing nitrates and adding visual appeal. I got some little clear plastic baskets that suction cup to the side of the tank (bathroom accessory from the supermarket) and I put pothos cutting in them. In days they had roots in the baskets and in very little time I had long, beautiful vines flowing across the tank tops and over the sides. Nitrates stayed extremely low even when I got behind on water changes.