How do you measure Florescent light output
Does anyone know a rule of thumb for measuring light output? Basically, what wattage do I use for cattleya culture, and what should I use for phalaenopsis or paphiopedilum? I know that distance from the bulbs also matter, so how far should they be from the source. I find reference to measuring such light in foot-candles, but how do you find the footcandle output of florescent bulbs? I have a light meter, but it will not register florescent light. Is this common or do I just have a cheap meter (it IS a cheap meter for that matter)? Info or link to a good instruction page would be appreciated!
Steve
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