[BonsaiNut]

If people are struggling with LED's right now, it is often due to lack of intensity versus lack of PAR. PAR is important for zooxanthellae. The term "intensity" I am using as a blanket term that includes broad spectrum lighting (including a fair amount of UVR) that causes marine animals to develop dark pigmentation. I am not completely familiar with all the science, but suffice it to say that when not kept under the right kind of BRIGHT lighting, SPS and other marine critters can become lighter in color or change colors altogether. This is unrelated to the term "bleaching" which typically means loss of zooxanthellae. So for some people using LEDs, their critters maintain the dark brown color of healthy zooxanthellae (due to high PAR levels) but lose their secondary "pretty" coloration.