could u...ya, plenty of anemones prefer to stick their foot in ur substrate rather than the rock, but still...Anemones are VERY difficult to keep and I wouldn't recomend one to anyone. Clownfish do not NEED them, contrary to popular belief. Anemones are VERY short lived in the home tank and when they die they can RUIN ur tank. BE VERY CAREFUL if you plan to purchase an anemone. At the very least, I'd give them a well established tank with PERFECT levels.
question: Why no LR?