help my bleheri clouded eyes T_T

[andra]

my bleheri inject clouded eyes,what should i do ??
i do 50 % water change today,is that ok if i use heater ?? i know he live in cold water..
sorry for bad english

 

[Ruolong]

What are your water parameters ?

Ph:
Amonia:
Nitrite:
Nitrate:
GH:
KH:
Water Temp:

Also is there other fish in the tank ?
Try some anti-biotics like Melafix.

 

[osprey 1]

i use tetracycline for eye problems, its messy, .(all the darkwater/foam) but it works.water changes and carbon after treatment will cleanup the color.