The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
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post #475 of (permalink) Old 01-20-2013, 07:45 AM
Algae Grower
Join Date: Jul 2010
Location: Dorset, UK
Posts: 15
Superb - my thanks.

I just want to take relative readings between my current T5s and my new multi-chip leds, once I've assembled them, so I won't need to worry too much about calibration.

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