How do I calculate light output of a fixture in watts-per-gallon?
To calculate the number of watts-per-gallon an aquarium receives from a light fixture, simply divide the total wattage of the light fixture by the number of gallons of the aquarium. For example, a 55-watt fixture used over a 29-gallon aquarium will provide its inhabitants with slightly less than 2 watts of light per gallon. While this amount of light is perfect for fish-only aquariums, it may not be adequate for most photosynthetic reef inhabitants.
Related Questions
- If an LED fixture has lower initial lumen output than a traditional HID light, how can an LED fixture claim to deliver lumens more efficiently than an HID?
- If an LED fixture has lower initial lumen output than a traditional HID light, how can LED claim to deliver lumens more efficiently than HID?
- How do I calculate light output at different currents and operating temperatures?
