HQI pendant issues

[midgetwaiter]

Just to back up what Stir Crazy said, your average plate glass blocks 100% UVC and 95% UVB. I can't remeber the UVA block rate but it is high enough for it to be safe.

The bulbs refusing to start could also be a heat issue, the bulbs won't fire if they are too hot. Do you have any fans in your hood?

[kari]

I believe the glass in my Sunlight Supply RO pendant has 3/16" tempered "low-E" glass. That would be more expensive though to get cut from the glass shop.

[StirCrazy]

Originally Posted by kari

I believe the glass in my Sunlight Supply RO pendant has 3/16" tempered "low-E" glass. That would be more expensive though to get cut from the glass shop.

Low-e would suprise me, isn't that refuring to the gass they put between panes of glass in energy efficient windows?

Steve

[kari]

Here's a photo of the corner of the glass used in my fixture. Some of the writing has worn off.

[kari]

Steve, I think the gas in thermopane units you are thinking of is argon. The low-e stuff is a coating on the glass and I have no idea if it beneficial or not.

[StirCrazy]

Originally Posted by kari

Steve, I think the gas in thermopane units you are thinking of is argon. The low-e stuff is a coating on the glass and I have no idea if it beneficial or not.

actualy your right, I checked to see what the windows I was looking at are, it is a chemical coating that reflects light energy and only alows aproximatly 75% of light to pass through... hmmm sounds like something I wouldn't want on my tank.

Just get tempered glass and raise up your lights to about 6" over the water if you can.

Steve