Proper Radion XR30 G6 Spacing

[aray]

Looking for some recommendations or guidance here.. I have (2) Radion XR30s mounted on RMS mounts over a 48" long x 25" wide tank. I mounted them so they would be evening spaced each overing a 2' wide area (see attached drawing picture) basically each one would cover a 2'x2' square. For a more even spread Im starting to wonder if the should each be shifted further out towards the sides of tank as I have a higher par along the middle line then I do offset to each side

Secondly, which I will probably just start an additional thread for this one with some PAR readings. But Im dealing with getting a higher PAR reading on my sand bed then Im getting mid tank.. I'll open an new top, but if anyone has any idea on that please feel free to chime in

s

 

[kingranch2003]

Looking for some recommendations or guidance here.. I have (2) Radion XR30s mounted on RMS mounts over a 48" long x 25" wide tank. I mounted them so they would be evening spaced each overing a 2' wide area (see attached drawing picture) basically each one would cover a 2'x2' square. For a more even spread Im starting to wonder if the should each be shifted further out towards the sides of tank as I have a higher par along the middle line then I do offset to each side

Secondly, which I will probably just start an additional thread for this one with some PAR readings. But Im dealing with getting a higher PAR reading on my sand bed then Im getting mid tank.. I'll open an new top, but if anyone has any idea on that please feel free to chime in

s

Trying to bump your thread her my friend.
You could definitely slide them down, but if your par isn't too high along that centerline or too low at the sides, you should be OK. I know you'll love the light and app. Great lights. I run an xr15 so I hope someone with the 30 will chime in.

 

[aray]

Trying to bump your thread her my friend.
You could definitely slide them down, but if your par isn't too high along that centerline or too low at the sides, you should be OK. I know you'll love the light and app. Great lights. I run an xr15 so I hope someone with the 30 will chime in.

I appreciate it! Im loving them so far, just wanting to get them all dialed in

 

[aray]

Picture will PAR numbers added

 

[oreo54]

Picture will PAR numbers added

That's a pretty even par map.
260 vs 210 is def. not the worst discrepancy.
Want to increase the center gap by an inch or so sure..


Not much to do about your sand bed par.
The "greater than" isn't that unusual due to glass reflections redirecting the light.
G6 beam angle is approx. 126 degrees.

LED Lighting Beam Angle Calculator

A simple calculator that determines spot size by a light's beam angle

store.marinebeam.com

Using the height from water to light face and 126 degrees and farthest " out" led get an estimate f how much light you are currently losing outside the tanks left and right side.
Say 10" so 5" from center is the farthest right led
That gets you about 7" from the end
So to contain all the light and using 14" as your spot size your light needs to be no more than 3.5" off the water surface ..which I know it is not.
"Standard" mounting height is 9" light face to water.
Beam spread at that height is 35".
17.5" radius
Believe that would put your light center at about 23" from the edge.
You're at 12" presently.

Point is you are already pushing light outside the tank ( how much depends on height) for the sake of a more even light field.


Using a single xr30 over a 24" cube putting the outside led at approx. 7" from the edge a height greater than 3.5" starts putting light outside the tank @ 126 degrees.
Same calc. Shows they aren't the best light spreaders ( spreads too much) using the standard mount and why the " complaints" of low par numbers.
The up side is better overall even-ness as you can see.

There's a lot of slop in the above cyphering and ignoring the fwhm aspect of lens beam angles. :)

Oh and brs has a whole vid on led spacing.

 

[aray]

That's a pretty even par map.
260 vs 210 is def. not the worst discrepancy.
Want to increase the center gap by an inch or so sure..


Not much to do about your sand bed par.
The "greater than" isn't that unusual due to glass reflections redirecting the light.
G6 beam angle is approx. 126 degrees.

LED Lighting Beam Angle Calculator

A simple calculator that determines spot size by a light's beam angle

store.marinebeam.com

Using the height from water to light face and 126 degrees and farthest " out" led get an estimate f how much light you are currently losing outside the tanks left and right side.
Say 10" so 5" from center is the farthest right led
That gets you about 7" from the end
So to contain all the light and using 14" as your spot size your light needs to be no more than 3.5" off the water surface ..which I know it is not.
"Standard" mounting height is 9" light face to water.
Beam spread at that height is 35".
17.5" radius
Believe that would put your light center at about 23" from the edge.
You're at 12" presently.

Point is you are already pushing light outside the tank ( how much depends on height) for the sake of a more even light field.


Using a single xr30 over a 24" cube putting the outside led at approx. 7" from the edge a height greater than 3.5" starts putting light outside the tank @ 126 degrees.
Same calc. Shows they aren't the best light spreaders ( spreads too much) using the standard mount and why the " complaints" of low par numbers.
The up side is better overall even-ness as you can see.

There's a lot of slop in the above cyphering and ignoring the fwhm aspect of lens beam angles. :)

Oh and brs has a whole vid on led spacing.

Thank you! I really appreciate all of the input. I'll just leave there current spacing placement as is. Any thoughts on switching the lenses for the high intensity (narrow lenses) to help raise the par on the scape and reduce the par on the sand?

 

[Mbritt]

I have a similar problem where im running 2 radion g6 xr30 over a 49" long 25" wide tank as well. I also did the 12" on center for each radion in order to cover 24". Now I can't get a par of 300+ at the top for my acros without having a par of 190-230 in the center of the tank. Should I move my radions to 10" from the edges of the tank versus 12"? I have mixed reef with some soft corals, lps and zoas around the bottom. Things aren't doing bad but if nutrients get out of wack the algea grows lol. Any thoughts here are welcome

 

[Mbritt]

Funny how no one seems to answer any questions here. All these tank and post and no one shares what they have learned. Disappointing

 

[Mbritt]

Trying to bump your thread her my friend.
You could definitely slide them down, but if your par isn't too high along that centerline or too low at the sides, you should be OK. I know you'll love the light and app. Great lights. I run an xr15 so I hope someone with the 30 will chime in.

I have same issue.