I had the same thing happen with my first ray. I came home from church and found the ray stuck up at the top of the tank to a powerhead intake. I shut the pump off and he had a huge ring on his back. I even saw a little bloodlike fluid on his back. I was flipping out since that was day two of having him. I did a water change and kept the water quality up. He ended up being fine!
the pump is a 794gph and have a a cartrige whit filter floss .i change that floss every 2 days . today i chang it after lunch but didnt put to work. few hours ago i call my wife from my job so that she put the pump working.
somewow i must have put the filter bad .
my wife sad tha she was gone from the livingroom for 15m top , by than the rays was stuck in the intake and the filter cartrige was in the botton of the tank.
i have now change 50% of water , clean the gravel and had a pipe to the pump from the outside so some air is coming. i dont have sea salt at home now and tomorow is the day of the deads so wall LFS gone be close ,is a holliday.
tomorow i going of my town for a night.so gone be 2 days before i can put salt
she is doing ok , the edge is just a bit darker than the rest, the brething is good and she already going true all the tank . the bottom part is in worst shape but i hope tha everything goes well
just arrived and my ray lost a peace from the edge of the disk, this is the part that was stuk in the pump.
she looks active and i gone give some bloodworms to see eat.
i took some pics but is giving a error on the upload , says that can not conect to the server???