I have a chalice frag that has been in the tank for 3+ months. Location in the tank has stayed the same during this time frame. Did go from 250W to 400W in a 27" deep tank with the lights about 8" off the top of water. I noticed today there is a small area on the frag that is showing a bit of white skeleton. It is hard to see in the photo, but was curious of others opinions and if there is anything I should do. Thanks.

