Would any of these be good mediums for hydroponic medium weed plant?

If you combined the peat moss with the perlite and maybe add some dolomite lime you would have a medium for your plants. Or you could get a bag of pro mix that would be even easier and everything would be mixed to the right ratios
 
pro mix is a soilless medium its called soilless because it has nothing added to it like a potting soil it is just peat moss perlite and lime for buffing your ph. soil would be something like fox farm ocean forest which has nutrients added to it. Just confused about the question about the promix falling through the root cone into the water and nutrients sounds to me your doing a hydroponic grow like deep water culture or something similar
 
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