halide question

[PoonTang]

Originally Posted by Ya Dude

what problems does the UV cause,I know the sun produces UV and I dont hear the ocean complaining

The UV will kill anything that is under the light. Fish will eventually be blinded not to mention the harm to you. Think about it...you can sterilize tank water with a 9W UV sterilizer, think what a 400W bulb will do to a tank. Also, just some regular old piece of glass wont do.

[Doug]

Originally Posted by PoonTang

The UV will kill anything that is under the light. Fish will eventually be blinded not to mention the harm to you. Think about it...you can sterilize tank water with a 9W UV sterilizer, think what a 400W bulb will do to a tank. Also, just some regular old piece of glass wont do.

Are you refering to DE bulbs or blocking UV from SE bulbs, as Dana talked about?

[Jason McK]

Originally Posted by PoonTang

Mogul base bulbs do produce UV but the glass envelope of the bulb is the shield. A mogul bulb is nothing but a HQI bulb with a built on UV shield.
ALL HQI bulbs MUST use a separate UV shield.

Exactly

J

[Doug]

http://www.masla.com/reef/uvlighting.html

Perhaps read this article. SE bulbs still produce a lot of UV light.

[bv_reefer]

good thread just finished it, darn they didn't have the xm's just coralifes they used for the experiments.