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Unread 09/08/2018, 04:08 PM   #1
clevebill
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neptune par meter

I just bought Neptune par meter.are they accurate for leds or are the par meters off when reading leds.


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Unread 09/10/2018, 12:19 PM   #2
gcarroll
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Quote:
Originally Posted by clevebill View Post
I just bought Neptune par meter.are they accurate for leds or are the par meters off when reading leds.
I belive they use the older sensor. that being said most PAR meters underestimate any light source that is predominantly blue.


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Unread 09/10/2018, 01:29 PM   #3
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I believe I read some place that Neptune uses an Apogee 210.
If you look at the chart, the 210 is considered an original, so use that graph line.
I have the new SQ-520. It reads the blue spectrum better.

https://www.apogeeinstruments.com/aquarium-par-meters/

BRS did some testing.

https://www.youtube.com/embed/A1F3IQ...owinfo=0&rel=0

https://www.youtube.com/embed/6hUkuf...owinfo=0&rel=0

https://www.youtube.com/embed/62_FdP...owinfo=0&rel=0


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