If you went by the tests it looks like you aren't processing the Ammomia. After all this time I would say that is unlikely if all the bacteria you have added wasnt dead. I say you get some more bacteria dump it in there and see if the Ammomia drops in color at all and if nitrites or nitrate show up. You can't really have too much bacteria in a tank so why not?
Others may have other suggestions that don't involve you buying some more bacteria but if you have any laying around I'd say dump it in.
Others may have other suggestions that don't involve you buying some more bacteria but if you have any laying around I'd say dump it in.