Post by Carl on Dec 28, 2018 10:28:13 GMT -5
I've updated this "Fish as Pets" article
PUR or RQE, YouTube Video Fail- Guide to lighting a planted tank
EXCERPT:
"We can document this efficiency quite easily with simple math, by simply taking the input energy in wattage to the output energy as measured by PAR at 400 mm in air (water has too many variables).
Even within the same product line, where everything is the same BUT the PUR and light spectrums, we can see a difference.
Then when other factors that differ among brands such as fans and lack of PWM use, the differences can be great.
EXAMPLES:
*AAP 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 watt of input energy per 1 PAR
*AAP AquaRay Reef White 600. This is rated at 12 watts input energy with a PAR of 48 at 400mm of air. This comes to .25 watt of input energy per 1 PAR
*AAP AquaRay Fiji Blue 600. This is rated at 12 watts input energy with a PAR of 38 at 400mm of air. This comes to .32 watt of input energy per 1 PAR
*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 watt of input energy per 1 PAR."
PUR or RQE, YouTube Video Fail- Guide to lighting a planted tank
EXCERPT:
"We can document this efficiency quite easily with simple math, by simply taking the input energy in wattage to the output energy as measured by PAR at 400 mm in air (water has too many variables).
Even within the same product line, where everything is the same BUT the PUR and light spectrums, we can see a difference.
Then when other factors that differ among brands such as fans and lack of PWM use, the differences can be great.
EXAMPLES:
*AAP 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 watt of input energy per 1 PAR
*AAP AquaRay Reef White 600. This is rated at 12 watts input energy with a PAR of 48 at 400mm of air. This comes to .25 watt of input energy per 1 PAR
*AAP AquaRay Fiji Blue 600. This is rated at 12 watts input energy with a PAR of 38 at 400mm of air. This comes to .32 watt of input energy per 1 PAR
*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 watt of input energy per 1 PAR."
