No to higjack the thred but mine is bleaching as well and i know it cant be to high of light on the sand bed? Could to low of flow cause that? Its in between two big rocks islands but it looks so nice there! LOL. Its a huge lobo about 5 x 5. Its doing great other then its much lighter. It eats well, no tissue ression and truthfully it is prettier! It has random stripes of yellow and orange, red, pink all kinds of color and I definitely dont remember seeing the yellow before. Should i move it if its so healthy and I like the placment and the way the colors look now?