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very interesting read. I currently have a 9 watt UV sterilizer running on a 75 gallon tank that has been setup for like 4 days. and the water still isn't clear. maybe ill try this willow technique. I like the idea of adding diatom powder to a hot magnum turning it into a diatom filter. I may just do that. Vaughn, you still have that HOT magnum? hehe
 

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The idea that light spectrum is a major contributer to algae growth is testable. To do that you would first need to set up 2 or more identical tanks, prove to yourself that you can keep them all algae free and stable. Then switch one or two tanks to the light spectrum you want to test. If you get significant algae in those tanks, but not in the "control" tank, that suggests that the spectrum is a problem. But, if you don't get significant algae in either of those tanks, it is virtually certain that the spectrum is not a problem. Of course, repeating this test a few times is best, also. But, above all else, you first have to determine that you can keep multiple identical tanks algae free.

I would be delighted if you decide to try this! We all have things to learn about algae.
yup, good idea tom barr is a big fan of creating a "control" tank to figure out algae issues for good reason, pretty much if you know how to induce the algae you subsequently know how to reduce it and or eliminate it all together. I highly doubt color temperature plays a role in algae growth
 
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