How do I start a nano...

[fishmanty]

For heaters, you may not need one. If you put a small powerhead in there, it may have enough heat to keep a small tank well heated. If not, they make 25watt and 50watt heaters. They are rather small.

Its also a great idea to set up a small sump, to add volume to the small tank. That way its easier to keep the system stable.

I have a small 5.5gallon you could buy if you wanted something small. Its a hagen, comes with canopy. (which you would probably not need, as its better to use a light like cristy is here (Nice tank btw):
http://i23.photobucket.com/albums/b3...5/DSCN5881.jpg

That way you don't need a top (Its better not to have one... more light goes in), and when its up high like that, the heat of the bulbs don't effect the heat of the tank much.