Other great articles on them:
http://www.**************.com/forum/viewtopic.php?f=56&t=150
http://www.**************.com/forum/library/puffers-in-focus/mbuforyou/
The tank is a 180 that has been runing for 18 months with 3 FX5's and is heavly planted. I have two puffers, little guys. Right now they are with two palmas polli and two gold nuggets.