Mars-Hydro LED Grow Light Discussion

KingJohnC;2385503 said:

wizgrow;2385470 said:

Sorry if my post sometimes comes across as ungrateful because I am truly very thankful for the that sooooooo many of you give such great help. The main reason I think i get frustrated with some of these statements/equations is because the are simply not defined well.

What does productive growth mean?
Why are watt equations used vs PAR?
When using Watt equations why is not the actual time integrated into it. IE total Kwatts used?

Not trying to be difficult here and rock the boat but as Tech PM, THESE are the simple questions I would ask team on a new project.

Sincerely
WG

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I never mind questions!

1) I define productive growth as producing vigorous flowering vegetation. When a illumination source is either too far from the plant or too weak to produced productive growth a plant begins making light airy popcorn bud instead of dense large buds.

2) While PAR ratings can tell you the amount of illumination a object is getting at measured distances a PAR meter is expensive equipment. PAR also does not measure either Ultra Violet or Infra Red light only the narrow bad of solar radiation from 400 to 700 nanometers. Actual watt per square foot recommendations are more easily used to calculate power needed for coverage.

https://en.wikipedia.org Photosynthetically Active Radiation


3) Time is not factored into the equation as the duration of light in flower 12/12 12 hours of light and 12 hours of darkness is consistent to induce flowering and most commonly used regardless of illumination source. Total Kilowatts of energy would vary to greatly with the illumination source, design and efficiency to give a standardized number.

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