The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
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Old 03-08-2013, 09:12 PM   #507
No more Bow ties
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You just need the light to be filtered. It's up to you how you waterproof it. The black thing is a 1/4" Heyco cord grip. It makes the wire coming into the cup waterproof.

Last edited by mistergreen; 03-09-2013 at 01:10 AM.. Reason: -
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