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**Jeffww** · 01-03-2013, 06:07 AM

What's the point of knowing through-air par. We already have a decent idea of what the PAR on most bulbs should be without water. It's harder to work with underwater stuff.

01-03-2013, 06:07 AM	#2
Jeffww Microsynodontis Lover (View User Tanks) PTrader: (9/100%) Join Date: Aug 2010 Location: Houston Posts: 2,081	What's the point of knowing through-air par. We already have a decent idea of what the PAR on most bulbs should be without water. It's harder to work with underwater stuff.