When I first started with ricordeas I got placement completley wrong. I used to put the on the top half of the tank and everything. Then I tried placing one at the bottom, slightly shadowed and it grew like crazy!Admittingly, at first I had a hard time keeping mushrooms. Ive lost soooo many beautiful shrooms. I try and stay away from the wild colonies now. When I owned a store, it seemed like they lasted for about 6 months before withering away. So frustrating to see when you know your tanks are spot on. Now though, Im able to grow them beautifully! I just wish they would lay babies