reef tank with only anemones for deco ?

i was thinking ... only sea grass, anemones, and tubeworms. like trying to create a reef tank look without corals .. is it possible ? what are the pros and cons? i love anemones .. and corals too.. but i have no confidence with corals. so i thought of the anemone reef idea.

really ? anemones are harder than corals ? i dunno .. i had a bad experience with corals when i started out .. bought a xenia .. and kenyan tree... the xenia just melted the next day.. fouling up my tank badly ... and the tree slowly wasted away ... all that time i already had 2 anemones in the tank .. i just got a tree again today to try ... but its been a few hours ... and the tree is still limp ... is this normal ? also .. how do i keep a tube anemone in place ? the one i got today just keeps floating away after a while .. i tried putting it in a pvc pipe even .. no good still ..