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Fishbulb2
02/08/2007, 09:57 PM
Anyone have any info on these? Could you really use it to determine when a MH bulb requires replacing? How do this compare to a PAR meter.
Thanks guys,
FB
raynist
02/09/2007, 08:19 AM
they measure different things.

Lux is the light our eyes see.

PAR is what plants/coral use for energy.
TandN
02/09/2007, 08:42 AM
so whhat does that mean exactly ?