Estimating PAR - desk lamp LED?
Are there any rough guidelines for guesstimating PAR from a desktop LED lamp? I have one of those Chinyo adjustable lamps from Staples 18" above the sand of a 7.5g shrimp tank; I'm hoping to grow fissidens on the rocks and Monte Carlo in the open spaces using light low enough that CO2/Excel is not required.
Getting back to the hobby and up to speed.
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