The Puffer Forum

I'd take the water to a LFS and have it tested if you can't buy a good test kit yourself. You need to know what's going on in order to help this puffer. As Flutter stated, water changes are always good because if there is anything in the water that's causing the puffer to be ill, it will be diluted, which is what's needed. I'd be doing water changes if it were me, and you might also add an extra airstone to get more oxygen into the water.

Do you have any filtration on the tank other than airstones?

Puffers really do need a lot of current and really clean water. Definately do lots of water changes for that fish to try to keep the water as clean as possible, until you can at least rule out ammoina, nitrite, nitrate issues.

And please don't post "good" or "fine" post the actual readings, okay?