I have had my green spotted puffer for a little over a year and have not started introducing her to salt water yet because I wanted to wait until after I had moved (5 hours). She is typically in a 20 gal tank but I had to transport her in a much smaller tank which she stayed in for almost 2 days. I did water exchanges everyday and treated for ammonia while she was in the smaller tank but she still has developed some sort of illness. Her eyes are extremely cloudy and she is very lethargic (just laying at the bottom unless I nudge her). She is normally extremely spunky and constantly begging for food and I can't even get her to eat. I have been treating with melafix with absolutely no change in her. I am scared of losing her if I can't find another option. I have read of using amoxicillin for fish and found a product with great reviews. Is this something okay to use with this kind of fish or do I need to go a different route?