question on anemone
 

hello i was thinking of adding a bubble tip anemone to my tank .do they need a sandy/rocky bottom in tank?my tank is bare bottom .its 90 gallon and cycled for 4 months

They will attach to the glass as well, or as mine did, attach itselt to the power head...stupid F%#$...lol

Bubble tip anemones prefer to be on rocks, not on the bottom, so you should be good with a bare bottom tank.