D_P,
Central Netteds like most of the smaller dragon species LOVE heat. I have kept Painted Dragons in the past (which are basically the same requirements) and I gave them a hot spot of 45+ degrees. Cool end is fine around 25. The UV debate is an ongoing one...I'd say they definately need UV.
The best way to heat these guys I found was to use an Oz-Bright combined heat/UV globe...these are available from URS or Animal Attraction.
If you're gonna use those globes, you will need a larger enclosure with good ventilation as they throw out a lot of heat. Also, these can NOT be used with a thermostat.
I highly recommend a top-opening enclosure as these guys are fast and tend to sit and wait for the sliding doors to open, then they dart out of the enclosure before you can even blink.
Simon Archibald