Dwarf puffer is sick

Question
Hello Chris,

I have a ten gallon tank in which I just transferred out my old under gravel filter and replaced it with a canister filter. In the process my tank went through a mild nitrogen cycle and one of my three dwarf puffers is looking dark/listless. Presently my tank has balanced out-any chance of survival for this little guy? What's the best thing I can do for him?

Answer
Hi David;

You might try a 25% water change. This often perks them up. Make sure he has plenty of places to hide and recover.

Come on over and join us on the freshwater fish forum at About.com to get even more information too;
http://forums.about.com/ab-freshaquaria/start

My member name is ChrisR62. See You There!

Followups welcome

At Your Service;
Chris Robbins