Examples for Vivarium Lighting
Below you can see a few pictures of the same terrarium lighted by different types of lamps.
The pictures have been made without flash in a dark room to allow comparison of the lamps in regards to brightness and light colour.
In addition the light intensity in lux was measured at the branching in the middle, to give hard data as the human eye can be confused easily.
As you can see tubes evenly light the terrarium while the smaller bulbs all leave shadows in the upper parts of the terrarium.
Consequently the best terrarium lighting is a combination of tubes and spot lamps as seen in the last picture.