I have run my clear/orange Astro for like 5 days off and on. No more than 6-8 hours at a time. The same with any lamp I have. Most times it's no more than 6 hours because of my schedule. Anyways, i noticed today after the lamp had been off for about a week that it's cloudy. It's not crystal clear like it was. It's "hazy". Why are these lamps doing that? I have another lamp that did the same then when it came in from shipping. It was clear for days and then all of a sudden it went hazy.