Fred wrote,
Just seems to be taking an awful long time...
I fed the fish and then did a 25% water change...

Sounds like what is called 'a never ending cycle'. Happens (sometimes)
with a fishless cycle when ammonia is added everyday (feeding the
filter). Stop adding ammonia every day (stop feeding the fish). Your
nitrites should drop to 0 and end the cycle within a week to 10
days.............. Frank