Hi all,
I'm new here, but have been lurking around for quite a few years.
I've spent quite a bit of time reading across forums including this one, specifically to find a definitive benchmark of PAR levels across different lighting systems (with all other variables constant), but with so may opinions out there, I'm left even more unsure than when I started!.
So, essentially, my question requires someone who has a light meter, and has actually taken comparative measurements...
the question is:
Does 100W of T5HO lights provide higher PAR values (at a fixed distance of say, 12") compared to 100W of T12 lights?
This assumes that all other variables are the same (reflectors, tank size, distance to substrate, ballasts, distance to water surface, bulb brands, fixtures etc...)
If the answer is yes, is there a rough benchmark percentage of by how much? 10% more, 15% more?
I understand that in the real world, all the other variables cannot realistically be the same (brand of bulb, operating temperatures, ballasts, water clarity even!), but let's pretend!
Going further, has anyone measured the differences with other lighting types as well, using t12 as the baseline reference – T8's, T5NO's?
I'm new here, but have been lurking around for quite a few years.
I've spent quite a bit of time reading across forums including this one, specifically to find a definitive benchmark of PAR levels across different lighting systems (with all other variables constant), but with so may opinions out there, I'm left even more unsure than when I started!.
So, essentially, my question requires someone who has a light meter, and has actually taken comparative measurements...
the question is:
Does 100W of T5HO lights provide higher PAR values (at a fixed distance of say, 12") compared to 100W of T12 lights?
This assumes that all other variables are the same (reflectors, tank size, distance to substrate, ballasts, distance to water surface, bulb brands, fixtures etc...)
If the answer is yes, is there a rough benchmark percentage of by how much? 10% more, 15% more?
I understand that in the real world, all the other variables cannot realistically be the same (brand of bulb, operating temperatures, ballasts, water clarity even!), but let's pretend!
Going further, has anyone measured the differences with other lighting types as well, using t12 as the baseline reference – T8's, T5NO's?