Johnnycannaseed1
Well-Known Member
Is inda-grow even in business anymore?
Note how they tell you to make the reading from the directly under the light (brightest point) then divide by area haha talk about a skewed results and pure disinformation in order to make their product seem way better than it actual is. Very naughty and pure marketing trickery.
Lets look at how the professionals do it
"If you want to find out the true light intensity of a lamp over a designated growing area (e.g. 4’ x 4’), it is important that the average of several PPFD measurements at a defined height are taken."
Notice what they say about companies that use the inda-gro method
"Lighting companies that only publish the PPFD at the center point of a coverage area grossly overestimate the true light intensity of a fixture. A single measurement does not tell you much, since horticulture lights are generally brightest in the center, with light levels decreasing as measurements are taken towards the edges of the coverage area."
https://fluence.science/science/par-ppf-ppfd-dli/
How does the illumitex calculator work?... Ah yes it does it "exactly" the same as OLD MOTHER SATIVA and fluence... Many readings from multiple points then you take the average.
http://illumitex.com/files/ppfd-calc.php
Here is another example of another company taking measurements the correct way
"PPFD readings can vary depending on the size of the grow light. Individual PPFD measurements just below the grow light are not very meaningful. Every grow light might have incredible PPFD values straight below the lights. Therefore it is essential to measure the PPFD values on the growing area at different spots, in order to calculate an average, which will give you the a reliable picture whether the grow light is effective enough to bring the photons straight onto all of your plants"
http://www.exciteled.eu/en/measure-par-ppfd
Note how they tell you to make the reading from the directly under the light (brightest point) then divide by area haha talk about a skewed results and pure disinformation in order to make their product seem way better than it actual is. Very naughty and pure marketing trickery.
Lets look at how the professionals do it
"If you want to find out the true light intensity of a lamp over a designated growing area (e.g. 4’ x 4’), it is important that the average of several PPFD measurements at a defined height are taken."
Notice what they say about companies that use the inda-gro method
"Lighting companies that only publish the PPFD at the center point of a coverage area grossly overestimate the true light intensity of a fixture. A single measurement does not tell you much, since horticulture lights are generally brightest in the center, with light levels decreasing as measurements are taken towards the edges of the coverage area."
https://fluence.science/science/par-ppf-ppfd-dli/
How does the illumitex calculator work?... Ah yes it does it "exactly" the same as OLD MOTHER SATIVA and fluence... Many readings from multiple points then you take the average.
http://illumitex.com/files/ppfd-calc.php
Here is another example of another company taking measurements the correct way
"PPFD readings can vary depending on the size of the grow light. Individual PPFD measurements just below the grow light are not very meaningful. Every grow light might have incredible PPFD values straight below the lights. Therefore it is essential to measure the PPFD values on the growing area at different spots, in order to calculate an average, which will give you the a reliable picture whether the grow light is effective enough to bring the photons straight onto all of your plants"
http://www.exciteled.eu/en/measure-par-ppfd
