You can’t get true color rendition of acropora with just blue light. If you want growth and great color, you need full spectrum lighting, there’s no way around this. If you have 6-8hrs of daylight spectrum each day, you’ll see the difference with acropora. There are several wavelengths needed for this, but warm whites play a big role in coloring acropora. If you want true pink, purple and blue, you need those warm whites. Plus, fish look like shit under all blues.
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