Well we are not here to beat on you at all. We are honestly trying to help you.
I can only speak for my self right now. But it is quite frustrating to se this kind of threads pop up on an regular basis and the people asking for help dont listen to the help they get.
The thing is you asked for help. You got solid answers with great advice from some of us raykeepers in this forum and you still trying to argue with us that we are wrong?
If you seriously want the help please then accept the help. If not for your own sake but for you ray and asian arowanas sake.
When keeping an ray you can forget all you thought you know about filtration as an ray produces 5 times more ammonia and waste then any other fish. Large waterchanges and overfiltered tanks is the key to success with rays.
For my 3200L tank i have 3 large showerfilters with more then 250L of biomedia then i run an econobead 60 beadfilter wich is supposed to handle an koipond of 30000L. Thats the amount of filtration needed with rays.
So please post your testreadings of ammonia nitrite nitrate and ph