here then is this true............What is Lumen output of these lamps ?
Though given, it is irrelevent ! Lumens are for Humans not plants ! Lumens measure how we see light. Our eyes prefer green light. Green light has the most Lumens, Red and Blue the least. Most fluorescent lamps are made to look bright for humans by adding huge spikes of greeny yellow light.
Lumens only measure how BRIGHT the light appears to us.
Lumens cannot measure light useful to plants - PUR
*What is the Kelvin colour temperature of these lamps ?
The Red and Blue lamps DO have a Kelvin colour specification, but the PURple™ does not.
The Kelvin color simply describes to which temperature a block of Carbon must be heated in order to match the apparent colour of the lamp.
It does not measure the Quantity OR Quality of the light for growing plants.
PURple™ does not appear in the Kelvin scale as it is a mix of TWO colours.
What is the CRI ?
CRI allows comparison between different lamps ability to render color, It measures how much the Red and Green and Blue reflected light, looks RIGHT to our eyes.
It does not measure the Quantity or Quality of light useful to plants - PUR
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