The Planted Tank Forum - View Single Post - Designing and Building a LED Fixture
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post #399 of (permalink) Old 03-24-2013, 12:03 AM Thread Starter
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You really have to use a PAR meter to find out how much light you get for that fixture. I notice it can be dimmed, and I suspect you will have to dim it to avoid having too much light for a planted tank.

I'm getting very close to a good design for a conversion of a cheap lux meter to a waterproof PAR meter, so if you want to be on the list for possibly buying one, PM me and I will add your name to my list. It would be way cheaper than buying a commercial PAR meter.

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