Thanks for posting that! (It strangely seems to be contradictory to their published PAR map though. Or my 6" mounting height assumption is incorrect...wish it was labelled.)
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Thanks for posting that! (It strangely seems to be contradictory to their published PAR map though. Or my 6" mounting height assumption is incorrect...wish it was labelled.)
Thanks for posting that! (It strangely seems to be contradictory to their published PAR map though. Or my 6" mounting height assumption is incorrect...wish it was labelled.)
That would be cool.MY pleasure! Hmm yeah they are way stronger than that. At 6" on full intensity they are over 2000. I never even looked at it on his site actually, but Im wondering if he's referring to at the factory default setting? I mean I'd have go below 50% to get even close to 800 at 6". Who knows, I can get out a ruler and s camera if anyone really want to see it. lol My apogee was calibrated at the factory less than a years ago so I know its close enough to accurate.
there actually very little in out tanks. not really enough to make a difference.There is very little diffusion of light through air compared to the diffusion through water, because water is so dense.
MY pleasure! Hmm yeah they are way stronger than that. At 6" on full intensity they are over 2000.
The height mounted above the water won't have a huge impact on par. There is very little diffusion of light through air compared to the diffusion through water, because water is so dense.
The intensity (or illuminance or irradiance) of light or other linear waves radiating from a point source (energy per unit of area perpendicular to the source) is inversely proportional to the square of the distance from the source; so an object (of the same size) twice as far away, receives only one-quarter the energy (in the same time period).
It’s the square inverse law. Twice the distance 1/4 the intensity.
Thus i run my radions on 100% 18 over the tank. Better spread same par as turning them down.
I'll drink to this! *cheers*The intensity (or illuminance or irradiance) of light or other linear waves radiating from a point source (energy per unit of area perpendicular to the source) is inversely proportional to the square of the distance from the source; so an object (of the same size) twice as far away, receives only one-quarter the energy (in the same time period).
It’s the square inverse law. Twice the distance 1/4 the intensity.
Thus i run my radions on 100% 18 over the tank. Better spread same par as turning them down.
It's only when you say it folks belive it.Outstanding! Thanks for the post. I have been saying the Adam's dumbed down version of this exact concept for years. I never understood running a fixture 5 inches off water, at 30%. Made absolutely no sense to me at all.
As Sargent Shultz used to say I know nothing lolIt's only when you say it folks belive it.
What do I know, I've just been putting lights I've stuff for 30 years.
Lol.
The intensity (or illuminance or irradiance) of light or other linear waves radiating from a point source (energy per unit of area perpendicular to the source) is inversely proportional to the square of the distance from the source; so an object (of the same size) twice as far away, receives only one-quarter the energy (in the same time period).
It’s the square inverse law. Twice the distance 1/4 the intensity.
Thus i run my radions on 100% 18 over the tank. Better spread same par as turning them down.
You actually do generally.Also, "spread" is a concept that needs more development. You do not automatically get better spread from raising lights. I