I purchase this yuma mushroom last day, it look bigger and wider when in lfs but it look shrink and not extended but still retain his bright colored ( you can see the mark around the mushroom), i place him at the top as the lighting is strong in there rather than the bottom as very little flow cause algae to quickly cover the rock, my salinity is about 1025 to 1026 my nitrate is good for now, between 5 ppm, here is the picture: