Thread: NFT Lettuce
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  #28  
Old 01-26-2010, 11:19 AM
txice txice is offline
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Join Date: Nov 2009
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A point for clarification to avoid any possible confusion...

Quote:
Originally Posted by Luches View Post
1. the wet feet theory is a common misconception when transferring knowledge from soil to hydroponics. The wetness is anyway not the problem but the oxygenation the wetness prevents. Some plants roots are simply lacking oxygen in too wet soil or media because of there fine roots. The humidity is not the actual reason, but the cause for the lack of oxygen. As soon as there is enough oxygenation, the roots of almost any plants thrive well and stay healthy when completely emerged in water.
I think you mean submerged? You are referring to situation(s) where the roots can thrive when completely under water given enough DO correct? I can't imagine where oxygen would be an issue for roots out of water unless the grow system was somehow air tight or something.
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