Quote:
Originally Posted by Horace
5 days growth on new lights...on 3 hrs off 2 hrs. I would say its working . No question...algae likes the white/yellow light just fine.....
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The algae will utilise the red spectrum of light in particular & the other spectrums that makes up the white will be a waste of Watts.
Your 50W light, on each side of that screen, could instead be about 16W of red 660 nm leds