The Planted Tank Forum - View Single Post - Comparison of Lighting Types (Lumens and Watts)
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Old 12-03-2006, 08:32 AM   #18
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I would be more than happy to retest various light combos with a power meter. All I need is the hardware
No all you need is the spectral distribution, the watt and the lumens output - and some funky math as shown in the Ivo Busko page at Aquabotanic. I've made a calculator for it, and have some values calculated here:
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