80 ppm of Nitrates is really high. I would get that under control asap. If your nitrates are that high that usually means you need to do more frequent water changes.
As for your mom and her oscar...
My boyfriend's dad has two 55 gallon tanks with plecos and large koi (12" long) and he hasn't done a water change in a YEAR. In the summer, the koi go in the pond but his plecos stay in the tank (remember, summer only lasts for 3 months in Wisconsin). His fish are still alive. It BLOWS MY MIND. They're constantly battling diseases, but they're still alive. I'm convinced that some people just have magic water. That, or fish with super powers.
That being said, the chances of a fish surviving without a water change is one in a million.
According to your mother, what qualifies an aqua hobbyist as a professional? I've found that the majority of the aquarists on here are more knowledgeable than the employees at my LFS. If the people with breeding ray tanks are not professionals, I don't know who is. lol
As for your mom and her oscar...
My boyfriend's dad has two 55 gallon tanks with plecos and large koi (12" long) and he hasn't done a water change in a YEAR. In the summer, the koi go in the pond but his plecos stay in the tank (remember, summer only lasts for 3 months in Wisconsin). His fish are still alive. It BLOWS MY MIND. They're constantly battling diseases, but they're still alive. I'm convinced that some people just have magic water. That, or fish with super powers.
That being said, the chances of a fish surviving without a water change is one in a million.
According to your mother, what qualifies an aqua hobbyist as a professional? I've found that the majority of the aquarists on here are more knowledgeable than the employees at my LFS. If the people with breeding ray tanks are not professionals, I don't know who is. lol
oh well what can you do