All I know is I love reading these foreign written EBay descriptions...Like "water much limpid and color of seaweed much more vivid"...classic...
"White light: shiny white makes the water much limpid and the color of the seaweed much more vivid, while at the same time, promotes the photosynthesis for the aquatic, especially for the green seaweed.
Blue Light: the water becomes pure navy blue after shined by this light and looks as if it were real sea water "“ very resemble. This light is especially for coral, pike, shrimp, etc. it boosts the absorption of the calcium & further synthesizes Vitamin D3 for Coral, making it grow fast & enabling a very fresh + colorful appearance."