Hello everyone! We have a Green Crown Leather that we aren't having much luck with and we're hoping for some suggestions. It has been in the tank for about 2 months now. Our tank is a stable 50 gallon aquarium with Ammonia zero, Phosphates zero, Nitrites zero, Nitrate trace. Lighting Kessil 160. Tankmates coral wise include: frogspawn, hammer, Xenia, zoas, palys, mushrooms and gsp that are all thriving plus 5 small fish that ignore the leather. We have moved our leather to different locations high and low. It's never been within reach of the hammer, frogspawn or palys. The flow is excellent...We feed phytoplankton, brine and mysis. What else can we do? Pic below..