Quote:
Originally Posted by ren
Hi Hoppy.
Its one of the hurdles I guess, not being able to accurately gauge everyones indivdual light output.
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Go to your local hydroponics shop and get a cheap, analog foot-candles light meter. They can be had for <$20 and they will have a scale for HPS lights and a separate scale for CFL lights.
From 2 inches away from the bulb:
my mains powered CFL indicated ~25 foot candles
my imhotep replication indicated ~8-9 foot candles
Others may get better readings but we must be consistant w/ the distances from the bulb. 2 inches was randomly chosen.