Reptile Fluorescent Lights

i have a wooden vivarium w/ glass sliding doors (4ft x 2ft x 2ft)

i live in scotland so most of the dragons heat will be from the bulb.

i have ;

*Habistat dimmer

*electronic timer - to go off at night

* Arcadia D3 Reptile Lamp , 36watt 48" 1200mm (5.0)

* Arcadian Fluorescent Lighting Controller 36-38watt 42"-48"x1"tubes

*Exo Daylight lamp , 150 watt

should i use a differnt bulb for heating? or a heat mat?

thanks