I just mounted over my tank the new Kessil 350W which I like, however the shimmer lines are very strong which I don't like. My other lighting was MH and I've also had a couple LEDs before, but those were spread out so while I had shimmer lines before, I never had a point source light like Kessil's which puts our very strong shimmer lines. They strobe enough so it's bothersome to me at least for my 1st day of viewing. For those that have shimmer lines, do you like them or do you get used to them? Or do you just try to avoid point source lighting to lessen the shimmer affect? I'm thinking I'll need to swap out the Kessil for something else.