My green brain I recently picked up is starting to lose color. Below are two pics, day after it was put in my tank, and second one was a little over a week later. Temp(76.5), salinity(1.025), pH(8.2-8.3), alk(8.9) and calc(420) have all been nearly spot on. Nitrates hovering around .5ppm and phosphates .04ppm. As you can see its in the sandbed so as far down as I can get it. Any suggestions?

