I'm not worried about light stress. Its just a first photo from when I switched to the led system. The ones in the solo cups have been under led their whole life. I don't really think I am going to move them into a small square and move the lights. This is a system test for LEDs. I want to see how they work for me. I am going to lower the lamps but as you can see they are stressed enough from the new light. They can wait a day or two before I drop them more. I know I should not have moved the link ghting and topped them the sane day. I'm sick and really did not give it much thought ... opps.