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Tanan · 06-25-2009, 07:04 AM

Simply bcoz there is no movement of water in the gravel thus oxygen cant reach it,resulting in an oxygen free state called normally as anaerobic.where bacterias that thrive in oxygen free state ll thrive.
Roots of plant serves as areater as well as keep the gravel supplied with oxygen(if the layer isnt too compact our more then 1-2 inches).
And if u really want to try NPT,buy diana's book,it ll help u a lot to understanding the process and chemistry going on.Also ready a lot before trying anything.

06-25-2009, 07:04 AM	#7 (permalink)
Tanan Junior Member Join Date: Mar 2009 Posts: 28 iTrader Ratings: 0 Plant Points: 1900	Re: Apogeton Boiviaianus potted in topsoil Simply bcoz there is no movement of water in the gravel thus oxygen cant reach it,resulting in an oxygen free state called normally as anaerobic.where bacterias that thrive in oxygen free state ll thrive. Roots of plant serves as areater as well as keep the gravel supplied with oxygen(if the layer isnt too compact our more then 1-2 inches). And if u really want to try NPT,buy diana's book,it ll help u a lot to understanding the process and chemistry going on.Also ready a lot before trying anything.