Thanks! Having never seen Kessils myself I would say that it would be disturbing to my eyes too.Halide shimmer and Kessil shimmer are not the same. Anyone that’s run both should know this. With a Kessil, you have to almost kill the surface agitation to get a good shimmer. Or even better is to pair it with a nice flat LED bar or T5s. Kessil shimmer is so overpowering it makes me sick to look at it and I LOVE halide shimmer.
My own opinion after running most LEDs is Kessils are the most overrated LED out there. Not because they are bad in any way. They work and have some great pros. I run three of the Tuna Sun over my vivarium. Looks very natural IMO with lots of contrast, shadows, hot spots, etc…in a reef tank I find most of that to be a negative though.