<a href=showthread.php?s=&postid=13012989#post13012989 target=_blank>Originally posted</a> by 8BALL_99
I was told I couldn't get Non LoE glass on a Velux skylight. How big of a deal is that? The dealer called Velux and asked.. I was standing there when he did. I just called and they told me they couldn't do it with out the LoE coating but they could do it without the Argon insulation. He said the Argon is what blocks most of the Uv and alot of the light.. But I'm guessing no insulation would be bad lol
Something isnt right... unless they have changed their supply in the past 2 years, maybe the person on the Velux end didnt know what they were talking about? There are several reasons why a person might want to skip the LoE coating besides a reef tank (like if you wanted a solarium or greenhouse... LoE absorbs portions of IR as well). I would call on my own and try to talk with someone.
That argument about the Argon blocking UV is also completely false, and ironic because its the exact opposite. Argon is a conductive insulator that goes in between the sheets of glass... has nothing to do with blocking UV or any light. Many phosphor based bulbs, including UV bulbs, are in fact filled with argon. An Argon Laser in fact, is used to generate UV, and Argon is being looked at for the next generation of microchips in the deep UV lithography process. Based on that info, I think you just got the wrong person on the Velux side... I would try again. If you get a negative response again, tell them you know someone who got them w/o LoE. I can try them tomorrow myself if you like... to get to the bottom of this mess.
As long as you still have the insulating glass, the fact that it may or may not have argon is minor. If anything, yes, not having LoE could be considering it a 'lesser window' in some cases, but your tank itself is being used as a thermal battery in that respect (as is the idea behing a solarium or other 'green solar spaces'). The water, soil, plants, or even ceramic tile and brick absorb the heat and act as the LoE inside the home anyways. Many of those prarie style homes, or ones with south facing solariums, are designed to work without LoE glass because the whole idea is to let the IR and UV through... and the house itself acts like the LoE, or even better. Those homes that use a large central sunroom, a brick wall, and ceramic tile floors to trap the heat would not function as normal with LoE panels.