Hey I have a small Motoro Stingray that is struggling and I am not sure how to help him so I am lookin for ideas or suggestions. 2 nights ago I fed him, and turned off the light as I always do. Woke up the next morning to find him floating at the top of the tank, when I touched him he took off like a wild man and spent the remainder of the day breathing really heavily. After doing some research I determined he wasn't getting enough oxygen in the water because of a recent change to a canister filter. So I threw in a HOB filter and an air stone, within an hour his breathing had slowed to normal. Yesterday I woke to his disc looking like it was discoloring, I did a water change, checked the parameters all is well there. This morning the disc dicoloraton has continued but not spread anymore, now it is beginning to flake off an die. I am trying to determine if he scratched himself, or it was lack or oxygen or somehow he got burned. Anyways at thus point I don't know how it happened I am just looking to figure out how to help it heal and get my guy back to full health.
