don't know my parameters. I actually just read up on this and it appears that if the pop eye is unilateral could be injury vs infection. I have had a very stable tank with no changes over the last 3 years. MY water is changed weekly. I unfortunately do not know my parameters. I do not test for anything. I know this is not the norm but I pretty much only know the salinity, ph, orp and temp. Hopefully she will recover. I feed reef flake, cyclop-eeze, mysis, angel formula frozen food. Hopefully she will recover. Thanks for the input