My oscar i noticed this morning has 1 of his eyes has doubled in size could anyone know what could have caused this has he was perfectly sound the night before Cheers
Could you possibly post a photograph? Also test your water for ammonia, nitrite, nitrate and pH. However, this does rather sound like a case of Pop-eye disease. We mustn't rule out physical damage either, something may have happened during the night. I would suggest that you test the water. Carry out a water change and get some Myxazin if possible. This can be used to treat this disease.
I may not always be right, but I am always the boss
If you can't ignore an insult, top it; if you can't top it, laugh it off; and if you can't laugh it off, it's probably deserved