Fish Related Frustration

I’ve never been closer to giving up on fish. I’m near the point of selling my fish tank and never dealing with fish again. I think that Petsmart is repeatedly trying to fuck me over. They keep selling me fish that have diseases that are latent. After I’ve had the fish for a few days the signs of their illnesses begin to rear their little heads. Being the good steward that I am, I attempt to medicate these sick fish. However, despite my best efforts, they die. FUCK!

This morning I woke up and found Alfonz lying at the bottom of his tank. He was dead as a doornail. He was fine the night before. I don’t know what’s going on!?!? My baby black moor (Ninja #2) is still doing very well. I don’t know what’s going on. I guess it’s entirely possible that I’m just terrible with fish… but I would think that’s entirely unlikely considering I have been measuring the water parameters like it’s my job. Everything seems to check out. The only fish that keep dieing are the fish I buy from Petsmart. Since my other fish aren’t dieing I can only assume that the problem is not on my end.

Has anyone else had such luck with fish purchased from Petsmart? Are there tanks so loaded with antibiotics that when they are moved to another tank they are succeptible to any disease that comes their way?