Box fish has eye mucus

[nyctek10]

Good morning,

My box fish seems to have a mucus over his left eye. Has anyone ever seen this and should I be worried about it and what is causing it? My nitrates and nitrites are 0, PH is 8.4 and Amonia appears to be .1 or so.

Thanks for the help,
NYCTek10

 

[Sharkbait420]

You should use prime. It's an ammonia detoxifier. I hope it gets better.