Flowerhorn not eating white stringy poo

[Bolo058]

Have you tested your water?

Yes

If I did not test my water...

...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

If I do not change my water...

...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

I have a flowerhorn I bought at the local fish store 3 weeks ago. He started having white stringy poo and not eating about a week ago. I have dosed the tank with API general cure twice now and salted it as well. He is still not eating. I have the temp at 86° the PH is 8.0 ammonia 0ppm nitrite is 0ppm and nitrate is 15 ppm. I use an eheim quick vac pro daily to spot clean his poo and do 40% water changes weekly. I'm not sure what to do next. Is there another med I should try. Should I give another dose of general cure? He is still fairly active and has decent color but it has been a week since he has shown even a hint of interest in food. Any help would be greatly appreciated.

 

[Bolo058]

Does anyone have any suggestions? I did a 50% water change today and cleaned everything since it has been 48 hours since the last dose of general cure. I have ordered a medication called "CLEAR" from CZ Aqua. It will be here first of next week. I'm not overly excited about sticking a syringe down my fish's throat but if it will save his life I will do it. If anyone has any suggestions other than CLEAR it any experience with this medication I would appreciate some advice. I knew these fish had some issues but I really thought I would get to keep this fish for a while before the health issues started.