Can someone explain why par from a t5 vs par from an led is different ? More to the point why high par from a t5 is less likely to burn acro then high par from a an led fixture
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With T5's its evenly disbursed par, with leds, they use reflectors that focus the light down and can cause par hot spots.Can someone explain why par from a t5 vs par from an led is different ? More to the point why high par from a t5 is less likely to burn acro then high par from a an led fixture
With T5's its evenly disbursed par, with leds, they use reflectors that focus the light down and can cause par hot spots.
So here is an example of T5 par coverage from the Aquatic Life T5 fixture
And here is a graph for a Radion G4 Pro
As you can see, the leds have a pretty good hot spot right under the fixture whereas the T5's have an even blanket of par coverage. Also with LEDs there is alot more shimmer, which causes quick bursts of high par to corals, whereas T5's dont give off alot of shimmer so the corals get continuous par amounts with little fluctuation.
I hope this helps with your question
It is basically yes.Right I knew about the hot spots and the spread but I guess I didn't think about shimmer having an affect or singular beams of light from LEDs hitting the coral. I was under the assumption that regardless of how it was delivered to a specific spot that par was par... So if I single point in a tank was getting 400 par from a t5 it would be equal to a single point of 400 par from an led but it's not.
With T5's its evenly disbursed par, with leds, they use reflectors that focus the light down and can cause par hot spots.
So here is an example of T5 par coverage from the Aquatic Life T5 fixture
And here is a graph for a Radion G4 Pro
As you can see, the leds have a pretty good hot spot right under the fixture whereas the T5's have an even blanket of par coverage. Also with LEDs there is alot more shimmer, which causes quick bursts of high par to corals, whereas T5's dont give off alot of shimmer so the corals get continuous par amounts with little fluctuation.
I hope this helps with your question
From what I understand about T5 Spectrum not all of the spectrum is used by corals for growth. From what I understand about kessil LEDs is that regardless of how you set them blue or white the spectrum is tuned for Coral growth. If that's true then would hi par from a T5 be relatively equal to low par from the kessil being that the spectrum's are used more or less efficiently by the corals ? I guess a simpler way to ask would be is light from the kessil used more efficiently then light from a T5 because of the spectrum ? Or am I going way off ?It is basically yes.
But it depends on the spectrum of the source.
An led has the down fall of having knobs. So users can guess what’s best. A t5 has all the good stuff and we can’t mess with it.
So you can get an led tonguve you 400 par buts a narrow spectrum. The t5 is premixed with a wider spectrum.
If we hit only the nm corals use , the tank would look pink. (Red and blue )From what I understand about T5 Spectrum not all of the spectrum is used by corals for growth. From what I understand about kessil LEDs is that regardless of how you set them blue or white the spectrum is tuned for Coral growth. If that's true then would hi par from a T5 be relatively equal to low par from the kessil being that the spectrum's are used more or less efficiently by the corals ? I guess a simpler way to ask would be is light from the kessil used more efficiently then light from a T5 because of the spectrum ? Or am I going way off ?
T5s are created for very specific spectrums as well.From what I understand about T5 Spectrum not all of the spectrum is used by corals for growth. From what I understand about kessil LEDs is that regardless of how you set them blue or white the spectrum is tuned for Coral growth. If that's true then would hi par from a T5 be relatively equal to low par from the kessil being that the spectrum's are used more or less efficiently by the corals ? I guess a simpler way to ask would be is light from the kessil used more efficiently then light from a T5 because of the spectrum ? Or am I going way off ?
Mine don’t actually. I have 3 B.B. in my 55 tank. It’s end to end Light. Like t5. In my 20x 18 I have a 16 x 8 box of light. So it’s a large source.Also led suffer from more of the shadow effect than t5
Also led suffer from more of the shadow effect than t5
Mine don’t actually. I have 3 B.B. in my 55 tank. It’s end to end Light. Like t5. In my 20x 18 I have a 16 x 8 box of light. So it’s a large source.
I could have used a single a360 , but it’s a couple inches across. So yes. Shadows. Single source lighting. Film noir.
While any light source can cast a shadow, the "shadow effect" is not created by LEDs.
The dreaded "shadow effect" is created when someone uses spotlights to light a tank where they meant to use strip lights.
So some users might be suffering, but the LED's are not – they are just doing the job they were designed to do.
Shadows are perfectly natural in the wild BTW. You have to get VERY deep before they cease being a factor.
The whole "shadow effect" concern seems unjustified to me considering the number of successful reefs that have grown up with AND without "shadowy lights".
If that's true then would hi par from a T5 be relatively equal to low par from the kessil....I guess a simpler way to ask would be is light from the kessil used more efficiently then light from a T5 because of the spectrum ?
Kelvin spread ?The leds thst are long instead of the round set of lights might spread the light more even but you loss is kelvin spread The reason they cluster the lights on led like the radion and kessil are for an even spread of all the different kelvin’s of light the leds thst are long gain coverage but lose even coverage. If you look at world wide coral sps tank they had radion spread very close together and about 12 or more above the water versus the 9 inches the bar has