Very sad news!!!

[Gpdriftwood]

Yeah I didn't mean to sound aggressive or so, but I can't help myself with cases like this and really hope people learn from it. I myself have done similar mistakes when I had my first rays. I still remember, was at the facility of an importer in Germany, picking up 10 wild discus and for the first time ever, saw a pair of wildcaught freshwater stingrays there, a pair of original Leopoldis. I was totally in love with them, but didn't know a single thing. Went home, fast forward ~2 months later, a day before my birthday, my girlfriend told me I've got to go to pick up a package asap without telling me whats in there. Well guess what, that pair of Leopoldi stingrays was in there. Me, being young and dumb, didn't do enough research on the food part, fed them bloodworms and artemia. And didn't even have a tank big enough, I had a ~260g tank back then. They grew maybe half an inch in the ~6 months I had them, but I fed them a lot so at least they weren't skinny and I eventually gave them to a guy with a much bigger tank that had more experience and later on they started to grow a little better.

You live and u learn. Screaming/trying to help, same thing right? Sorry poster, didn't mean to scream at ya. Lol

 

[DrownedFishonFire]

It happens. 180 might be big enough to you but it isnt enough sized of a tank to forgive with the stocklist you had going here for all variables to come into play. One of my suggestions was look into your water supply if there was anything going on it can screw up the water isssues when you were doing some WCs.

I personally have found bloodworms to be a jinx thing to me. For diseases. I feed bloodworms as a treat maybe once or twice a month thats it those days. Next time look into bigger sized tank to be able to give you some more flex room when having rays being super sensitive to anything and when you notice you have time to adjust or address it vs smaller tank.