Further Revised 1/6/19 Sections Include: Overview History Useful Light Make Up (PUR) Measuring Output Energy Spectrum & Kelvin RGB Features Watt per Gallon? 0-10v vs. Pulse Width Modulation Dimming Emitter Combos vs. Specimen Placement Fixture Construction Warranties Comparisons/Tests Emitter Information, … Continue reading LED Aquarium Lights, Lighting; How they work, DIY