

Difference RED light and COLD White

Discussion in 'Algae Scrubber DIY' started by tony73, Jul 9, 2019.

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  1. tony73

    tony73 New Member

    Hi all

    I'm looking to make a DIY WATERFALL Scurbber ATS

    In the past I used an algae reactor, 1st time I used Red led 660nm and a lot of Blue 440nm, 2nd time I used only white cold.

    My concerns are that with WHITE COLD algae grow is more faster

    But my question is: different light, as an example RED or WHITE, can grow different type of algae?

    which light do you suggest for ATS?

    Best regards
  2. Turbo


    If you're comparing a scrubber that has mainly Royal Blue with only supplemental Deep Red to a scrubber that has only Cool White, I would expect that you would get better growth out of the scrubber running only Cool White - but not much better.

    The ideal mix, in my opinion, is primarily Deep Red with only minor supplemental Hyper-Violet.

    660nm Deep Red running at 700mA (100% rated current)

    410-415nm Hyper Violet running at 350mA (50% rated current)

    Ratio of actual LED chips: 6 Deep Red @ 100% for every 2 Hyper Violet @ 50% (which is essentially a 6:1 ratio). You can use less HV and run them at 100% also if that is simpler for you to build, but it is easy to put a pair of LED in parallel with each other and then connect them into a series string - Here is an example of 6 reds in series with a pair of LEDs in parallel within the series string (they are blue in this example)

    DIY LED 12 Wiring.jpg

    DIY LED 15 Wiring - Blues parallel.jpg

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