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02-19-2011, 02:38 AM #11Senior Member
End to the debate/promix & PH
Originally Posted by oldmac
Real hydroponics systems do not allow the main root structure to embed itself into a medium, roots are always given direct access to the nutrient solution instead of having to absorb it from a medium that the roots are embedded into.
Soilless mixtures hold and retain the water and oxygen, their purpose is to REPLACE SOIL and provide a place for roots to hold onto and absorb nutrition.
True hydroponics, you have no medium like that. You have at the most an initial seed starting plug and the roots just dangle away in the nute solution.
Video - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting - this is a true hydroponics system. Note the distinct lack of pro-mix or anything besides rockwool.
Even the grass seed itself doesn't require a substrate.
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