I have read many posts on here about the color of lights having an affect on algae. I am not sure it is true. I run my tanks quite white and it doesn't seem to be a problem. I often wonder if the people that shift the spectrum to blue aren't actually reducing the overall power somewhat.I recently turned my lights down at 70% blue and 15% white, produces a par of around 70-100 throughout the tank. I had my whites at 50% before