The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
View Single Post
Old 01-15-2013, 04:23 AM   #470
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (74/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,787
Default

The ratio between PAR and Lux readings, for 6500-10000K fluorescent lights is more like 76 than 60. But, if you are measuring the light from a pink bulb, the sun, incandescent bulbs, etc. the ratio can be much different. Lux meters are very useful for rough measurements to see if a light fixture/bulb is going to work well for you, but they are not useful for actual research type measurements - determining how effective an actinic bulb is compared to a 6700K bulb, for example.
__________________
Hoppy
Hoppy is online now   Reply With Quote