I got a finger leather from the LFS last weekend, my first soft coral. I've had zoas and shrooms in there for quite a while now. I slowly drip acclimated it and then placed it at the bottom of the tank. The polyps will extend slightly but I would venture to guess that it's not quite 50%. I have been slowly moving it up off the bottom so it can adjust to the light and have also had it in different flow-rate areas. How much flow do they like? I am also including lighting specs and water parameters. Thanks. 
2x175w XM 10,000K metal halides
2x96w actinic PC
Ammonia 0
-ite 0
-ate <5
pH 8.2
CA 450
Temp 80*f
				
			2x175w XM 10,000K metal halides
2x96w actinic PC
Ammonia 0
-ite 0
-ate <5
pH 8.2
CA 450
Temp 80*f