Glass tank cover and lights

They are double ended bulbs

 

Oh ok. I am not using those . Just the mogul socket ones.

 

Then i dont think UV rays will be a problem...

 

O.K. thanks for your input on lighting.......

 

no problem...

 

You got it.. good luck

 

What are HQI Metal Halides?
HQI double ended bulbs have been used in Europe for many years and are beginning to gain popularity in the U.S. HQI metal halide bulbs offer a more clean color spectrum and last longer than standard metal halide lamps. HQI bulbs require HQI ballasts to run and UV filters to prevent UV damage to corals.

Jim

http://www.specialty-lights.com/aquariumfaq.html#hqi

 

So they are very similar to Halogen bulbs?

 

Yes, they are tiny and if you get oil from your hands on them, they will burst.

Here is a brief description and pic...
http://www.hellolights.com/15xde10hqide1.html

The mogul base ones are UV sheilded, but if they get splashed with water, like JohnO said, they can break also....what a mess!!!! :-X