Im going to call BS on this one bud.
Example- 12 gallon eclipse, 18# LR, 3" LS,
50 watt heater. Original PC light fixture, with a 50% 21000K and 50% 8100K bulb.
Thats 13 watts of 50-50 light, and all my corals are great. Button polyps (easy) sun polyps (non-photosynthetic) Blue ricordia mushrooms (Beautiful, but easy) are fine.
BUT, my pulsing xenia is also thriving, has even split colonies. My purple gorgonia is the latest addition, at 4 weeks, and has grown 1.5 inches taller and the polyps have doubled to tripled in number.
WHAT IM TRYING TO SAY IS 4 WATTS PER GALLON IS NOT RIGHT FOR EVERY TANK!