I have a Exo Terra 12"X12"X12" terrarium and was wondering what type of lighting (if any) should I use for my Bumble Bee Toad.

The pet store had these little guys tucked away on a bottom shelf with no light

I'm currently using a Flukers 5" dome with a 23 watt 5500K spiral fluorescent lamp.

Too much? too little?

I couldn't find any reference in the care sheets or on Google about lighting