Post by Carl on Jul 7, 2023 17:56:51 GMT -5
Updated Article from "Aquarium Answers"
www.aquarium-pond-answers.com/2012/03/pur-vs-par-in-aquarium-lighting.html
EXCERPT:
"Here are five examples using PAR reading directly under the lights (within the FULL footprint of the light, not using pin point "hot-spots").
Keep in mind that the lower the number, THE MORE EFFICIENT the LED light is, and it is common for cheaper LED lights to have higher numbers:
SB Reef Light PRO 32. This is rated at 363 watts input energy with a PAR of approximately 881 (100%) at 400mm of air.
This comes to .41 watts of input energy per 1 PAR (its Chinese made cousin, the Prizm is similar in its PAR efficiency)
Kessil A150. This is rated at 90 watts input energy with a PAR of approximately 325 (100%) at 400mm of air.
This comes to .27 watts of input energy per 1 PAR
AquaRay Reef White NP 2000. This is rated at 30 watts input energy with a PAR of 380 at 400mm of air.
This comes to .08 watts of input energy per 1 PAR
Finnex Planted 24/7 20 inch model. This is rated at 15 watts input energy with a PAR of 61 at 400mm of air.
This comes to .24 watts of input energy per 1 PAR
Orbit Marine LED Light 18 inch model. This is rated at 18 watts input energy with a PAR of 50 at 400mm of air.
This comes to .36 watts of input energy per 1 PAR
VIPARSPECTRA UL Certified V450 450W. This is rated at 200 watts input energy with a PAR of 370 at 400mm of air.
This comes to .54 watts of input energy per 1 PAR
The CLEAR WINNER here as per LED efficiency for the important aspect of PAR output, is the AquaRay (sold in the USA primarily by American Aquarium Products/AAP), being 4 times more efficient than other premium aquarium LED lights and 7 times as efficient as the more common/cheaper brands often sold via Amazon and other discounters."
www.aquarium-pond-answers.com/2012/03/pur-vs-par-in-aquarium-lighting.html
EXCERPT:
"Here are five examples using PAR reading directly under the lights (within the FULL footprint of the light, not using pin point "hot-spots").
Keep in mind that the lower the number, THE MORE EFFICIENT the LED light is, and it is common for cheaper LED lights to have higher numbers:
SB Reef Light PRO 32. This is rated at 363 watts input energy with a PAR of approximately 881 (100%) at 400mm of air.
This comes to .41 watts of input energy per 1 PAR (its Chinese made cousin, the Prizm is similar in its PAR efficiency)
Kessil A150. This is rated at 90 watts input energy with a PAR of approximately 325 (100%) at 400mm of air.
This comes to .27 watts of input energy per 1 PAR
AquaRay Reef White NP 2000. This is rated at 30 watts input energy with a PAR of 380 at 400mm of air.
This comes to .08 watts of input energy per 1 PAR
Finnex Planted 24/7 20 inch model. This is rated at 15 watts input energy with a PAR of 61 at 400mm of air.
This comes to .24 watts of input energy per 1 PAR
Orbit Marine LED Light 18 inch model. This is rated at 18 watts input energy with a PAR of 50 at 400mm of air.
This comes to .36 watts of input energy per 1 PAR
VIPARSPECTRA UL Certified V450 450W. This is rated at 200 watts input energy with a PAR of 370 at 400mm of air.
This comes to .54 watts of input energy per 1 PAR
The CLEAR WINNER here as per LED efficiency for the important aspect of PAR output, is the AquaRay (sold in the USA primarily by American Aquarium Products/AAP), being 4 times more efficient than other premium aquarium LED lights and 7 times as efficient as the more common/cheaper brands often sold via Amazon and other discounters."