What does 60K lux calculate to?
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TheEngineer
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Equate to in PAR? There are a lot of correction factors depending on the light. I've seen anywhere from 45-75 for various LEDs. So that would be 800 to 1300. Take that with a BIIGGG grain of salt.
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twilliard
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I wish I could get my hands on a PAR meter 
When I go to take the readings even my skin starts to burn at the water surface and wonder if this is too much.
When I go to take the readings even my skin starts to burn at the water surface and wonder if this is too much.
TheEngineer
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Uhhh... it sounds like it. Lol!I wish I could get my hands on a PAR meter
When I go to take the readings even my skin starts to burn at the water surface and wonder if this is too much.
Local club with one? You could DIY a setup with the Appogee sensor.
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twilliard
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No clubs here, actually no one close here is into reef keeping. My wife would freak out if I bought a par meter LOL
Do you think I should drop it down incrementally over several weeks?
Most all my zoanthids are gone
TheEngineer
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I hear that!No clubs here, actually no one close here is into reef keeping. My wife would freak out if I bought a par meter LOL
Do you think I should drop it down incrementally over several weeks?
Most all my zoanthids are gone
I dropped my Kessil down to 45% from 75% and they're much happier now. I read about 6000 lux at most of my colonies now and they seem happy. Have you tried sticking your lux meter in a bag and measuring underwater? I did and was surprised by the results. Particularly how much the bag attenuated he light!
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The potential disparity in the conversion is larger at higher irradiance levels, so that makes it worth putting a little thought into the conversion.
But what lights are you measuring specifically?
If they are your DIY lights, what power (watts) are you running the system at, and do you run a mix that's about 14,000K to 20,000K in color? Anything you'd say is "exceptional" about the colors?
And these are not "accuracy levels" we're talking about.....one number is more correct than the others, and it's accurate. It's a matter of picking the right one, or at least the one closest to it. For that, you have to know more about the lights your are measuring and how they relate to some/all of the conversion factors.
2¢
But what lights are you measuring specifically?
If they are your DIY lights, what power (watts) are you running the system at, and do you run a mix that's about 14,000K to 20,000K in color? Anything you'd say is "exceptional" about the colors?
And these are not "accuracy levels" we're talking about.....one number is more correct than the others, and it's accurate.
It's a matter of picking the right one, or at least the one closest to it. For that, you have to know more about the lights your are measuring and how they relate to some/all of the conversion factors.2¢
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twilliard
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Yes it is my DIY fixture equivalent power of 2 MH 20k running 4 1000Ma drivers, 48 5W chipsThe potential disparity in the conversion is larger at higher irradiance levels, so that makes it worth putting a little thought into the conversion.
But what lights are you measuring specifically?
If they are your DIY lights, what power (watts) are you running the system at, and do you run a mix that's about 14,000K to 20,000K in color? Anything you'd say is "exceptional" about the colors?
And these are not "accuracy levels" we're talking about.....one number is more correct than the others, and it's accurate.
2¢
mcarroll
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Just to clarify...
Is it actually pulling 240 watts at peak output during the day?
Lenses? ...or just plain 120º output?
The 5-watt chips are 20,000K color?
Is it actually pulling 240 watts at peak output during the day?
Lenses? ...or just plain 120º output?
The 5-watt chips are 20,000K color?
mcarroll
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60 will certainly give you an idea of the neighborhood you're in, since it's kind of a median value, and may be very close or even correct.
But as @icecool2 pointed out, the potential range of actual PAR values is pretty considerable....so you just have to hope 60 is pretty close to your light.
...or do a little more digging for the comparison.
Is your LED blend similar to some other commercial fixture, like the Razor (or other), for example?
But as @icecool2 pointed out, the potential range of actual PAR values is pretty considerable....so you just have to hope 60 is pretty close to your light.
...or do a little more digging for the comparison.
Is your LED blend similar to some other commercial fixture, like the Razor (or other), for example?
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twilliard
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Here is the setup I had to go dig this up, correction on chip count now I can't see lol
"To create the look of a Radium 20K MH...My Favorite mix... You will need Binned LEDs." from my build guidance
15 XT-E Cool White 7.5K
30 XT-E Royal Blue D36/37 (450-455nm)
10 XP-E2 Blue 465-470nm.
I had to go dig this up, correction on chip count now I can't see lol"To create the look of a Radium 20K MH...My Favorite mix... You will need Binned LEDs." from my build guidance
15 XT-E Cool White 7.5K
30 XT-E Royal Blue D36/37 (450-455nm)
10 XP-E2 Blue 465-470nm.
Mixing a color to appear close is different than par as it visual only.
Dana gave led a 70 years ago. And higher
My maxspect is really close to 60 from factory and pers tests. A Chinese bb is constantly 63
I'm getting closer on kessil and I think it's 60 as well.
Just got more data from Radion yesterday they're on track with my ai sol data.
Jus saying There seems to be an emerging pattern.
T5 all run in the high 30 and 40. Mh 40 and 50.
Leds .........
Jus Sayin. 60.
Dana gave led a 70 years ago. And higher
My maxspect is really close to 60 from factory and pers tests. A Chinese bb is constantly 63
I'm getting closer on kessil and I think it's 60 as well.
Just got more data from Radion yesterday they're on track with my ai sol data.
Jus saying There seems to be an emerging pattern.
T5 all run in the high 30 and 40. Mh 40 and 50.
Leds .........
Jus Sayin. 60.
@icecool2 from an engineering standpoint, fairley interesting
TheEngineer
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Agreed! If only there were enough hours in a day to do the math on these things
yea ive been picking up these little bits by observation and luck for some time now and its finally falling in to place.Agreed! If only there were enough hours in a day to do the math on these things
oops. times up. ready for beer and couch.
