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i have researched a bit about horticular rockwool... I certainly know that horticular rockwool had been developed from industrial rockwool in denmark arownd 60's i the real differenve betwen them is since the main usage of industrial rockwool is insulation it is hydrophobic.. and it is also...

they are widely used for insulation of houses....

Hi, (sorry about my bad english) I cant find any hydroponics suppies in my country. But i really want to try it.. (although i get good results with soil) I like challenges.. I really want to do it. I built my aerophonic set up.. Bought salts and got my hydrophonic nutrients recipies... etc...