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 Antonio
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)
