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gr8nguyen1 · 06-26-2009, 05:50 PM

si was reading diane's book and it was also mentioned in this thread several times. why must the soil layer only be 1-1.5 inches? why can't the soil and the gravel top layer be 2 inches or more?

06-26-2009, 05:50 PM	#68 (permalink)
gr8nguyen1 Member Join Date: May 2009 Location: redondo beach, ca Posts: 58 iTrader Ratings: 0 Plant Points: 3650	Re: What is "el Natural?" A Step by Step? si was reading diane's book and it was also mentioned in this thread several times. why must the soil layer only be 1-1.5 inches? why can't the soil and the gravel top layer be 2 inches or more?