Thanks for the link I have not had a chance to read the article, but for algae growth you want around 5500k to 6500k for best growth.
They need a lot more than just light though and will clash in low nutrient systems.
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller
180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return.
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