Survey: Do you calculate PPFD - umol/s/m2 - to DLI - mol - when using a light?

[ViparSpectra]

Hello 420 growers, ViparSpectra would like to take a survey with you for helping light design, which may take a few minutes.

Q: Do you calculate PPFD (umol/s/m2) to DLI (mol) when using a light?

What's your answer? And why? Thank you.

* Daily Light Integral (DLI) is the total amount of photosynthetic active radiation (PAR) in a day. The total amount of light the plants get in a day should be more important than how intense the light is. For marijuana, the sweet spot is 43.2 DLI. The formula can be easy:
PPFD (umol/s/m2) x Time (s)x 0.000 001 mol = DLI (mol)

Hence you can go to the manufacturer's PPFD map and pull as best you can from the results.

 

[bluter]

no. will reference it but it's nothing i follow. i watch the plants and react to them. i also have a tendency to over light.


i move away from things that add more gear, or more complicated gear, into the equation. i only add gear and change techniques if i need a solution to a problem.

 

[Roy Growin]

No, never taken any notice whatsoever
Plants are the best light meter, humidity meter and just about everything else
What I don't measure doesn't bother me

 

[Icemud]

For marijuana, the sweet spot is 43.2 DLI.

Can I ask what your source or reference is of 43.2 DLI?

 

[ViparSpectra]

No, never taken any notice whatsoever
Plants are the best light meter, humidity meter and just about everything else
What I don't measure doesn't bother me

Thank you for your feedback! We should indeed listen to the plant's response when planting and make corresponding adjustments.

 

[ViparSpectra]

no. will reference it but it's nothing i follow. i watch the plants and react to them. i also have a tendency to over light.


i move away from things that add more gear, or more complicated gear, into the equation. i only add gear and change techniques if i need a solution to a problem.

Yes, everyone has their own exclusive way of growing, and the most important thing is that we can use the equipment well and grow better.