PAR

[Steven Postalwait]

So I picked up an Apogee SQ-420 cheap, but it reads in micromoles. How does this do me any good in relation to PAR?

 

[oreo54]

So I picked up an Apogee SQ-420 cheap, but it reads in micromoles. How does this do me any good in relation to PAR?

First, PAR or Photosynthetic Active Radiation needs to be measured. PAR is essentially a measurement of light emission within the photosynthetic range of 400-700nm. This represents the area of light that plants use for photosynthesis, or to grow. PAR is measured by the amount of micro moles of light per square meter per second.

PAR (common usage NOT correct usage) = PPFD.

 

[Steven Postalwait]

PAR (common usage NOT correct usage) = PPFD.

So basically the number I’m reading is par and I’m overthinking it

 

[saltyfilmfolks]

Yes. Basically.

 

[Steven Postalwait]

So a little more on this, it shows a correction factor of 1.20 when running ATI bulbs, 2x actinic and 2x blue plus. I'm running Giesemann, 2x super actinic and 2x aquablue coral. Will the correction factor be close? And i know this isn't a good sensor for LED, but it does have a CF for blue. Is there any good way to correct when running Primes?