Your reef tank is presumably full of water. How did you adjust your lighting scheme for that?
https://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water
Your reef tank is presumably full of water. How did you adjust your lighting scheme for that?
https://en.wikipedia.org/wiki/Electromagnetic_absorption_by_water
RE: DIY - Designing Optimum Wavelength LED Lighting to Turbo-Boost Plant Growth (or Inhibit It)