Someone just told me about a post they read awhile back about these lights. I don't think the post was here. Anyway, I guess the post said that a vet told someone that Viatlights lose their full spectrum capacity after 30 days. I guess a study was done on these and that's what they found. If this is true, I wonder how many other lights lose their capabilities in a short time? This is something that now has me deeply concerned! Jeff