Oh no I hope you figure it out. My mom and I learned the hard way. Mom bought a puffer from LFS for my brother, we ended up caring for it. But they sold my mom a line of crap that it was freshwater and eventually he developed this milky film on him and was looking real sick. We started to add salt and he would perk up when we did and was using melaflax (sp) but I think it was too late, he eventually died. I would love to have another puffer but it breaks my heart to look at them now. I feel guilty about my brothers fish and man that was nearly 7 years ago!