What would we think of the Fluence Ray? - Lighting - Aquatic Plant Central

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Old 09-07-2019, 08:19 AM   #1 (permalink)
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Default What would we think of the Fluence Ray?

https://fluence.science/technology/ray/

* Cost - in line with fixtures "made for aquariums"

* Specturm - finally, a manufacturer whose spectral specs I would trust ( https://fluence.science/technology/p...um-led-lights/ ) How appropriate for aquatic plants?

* Beam angle - may be too wide

* Intensity - likely good

* Living Room Features - just dimming, though they charge an awful lot for a 0-10V dimmer control
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Old 09-07-2019, 10:12 AM   #2 (permalink)
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Default Re: What would we think of the Fluence Ray?

The light intensities shown on their website make no sense. They are giving PAR numbers without specifying at what distance from the light fixture they made their measurements. Something is missing there, or it is just a sales pitch.
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Old 09-07-2019, 11:29 AM   #3 (permalink)
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Default Re: What would we think of the Fluence Ray?

It would seem they agree with you, Hoppy.

"To ensure you are getting actual PPFD values over a defined growing area, the following needs to be published by the manufacturer: measurement distance from light source (vertical and horizontal), number of measurements included in the average, and the min/max ratio). Fluence always publishes the average PPFD over a defined growing area at a recommended mounting height for all of our lighting systems." https://fluence.science/science/par-ppf-ppfd-dli/

Though you're right -- I don't readily see where they define the area and distances used to make the measurements...
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Old 09-07-2019, 12:11 PM   #4 (permalink)
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Default Re: What would we think of the Fluence Ray?

Found it: http://fluence.science/wp-content/up...de-9.27.16.pdf

Ámol/m^2/s

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Old 09-08-2019, 05:49 PM   #5 (permalink)
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Default Re: What would we think of the Fluence Ray?

Thank you. That is good data to keep if anyone is thinking of using one of their light fixtures. It appears to be in the range more appropriate to salt water tanks than to planted tanks.
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