CanadaPleco;4562250; said:Sunken eyes in royal species are caused 90% of the time by poor water conditions. A large (75%) water change may have saved its life. I have seen a royal have eyes so sunken I thought they were gone to over night in good water look perfectly normal the next day.
I can't imagine a 20% change weekly with two fx5s which I clean one every two to three weeks was not enough on a 125 gallon. That's what is confusing me. I have other fish in there that I've never had a problem with. The only fish I have ever died in my fish tank that did not relate to being beat on have been my two royals. I bought a new one and have been feeding cucumber and three different types of algae wafers on top of the wood. Hopefully it works out.