I has owned one for at least 6 months. Mine climbed up towards the light and left a remnant of itself behind. It actually fragged itself. I gave the small Toadstool Leather to a friend of mine and it's actually grown in size and as you will eventually realize they are very resilient. You can wedge it between rocks in your reef tank and it will attach itself to the rock in due time. You need not to worry, and just keep it in a spot with good moderate current and it will stand up for you and look amazing.
55g Reef Setup: 2 Percula Clownfish,5 Blue Legged Hermit Crabs,1 small Kenya Tree Coral,1 Toadstool,2 Yellow Sponge, and 1 Firefish.