aeroponics leaves the roots IMMERSED in nothing but AIR as a grow medium...deep WATER culture uses WATER as a grow medium...the hydroton is just an anchor as far as i see it. and yea, an oxygen system is very hazardous in an environment where one could be smoking in the same building...air is a way better idea

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used to crumble up my weed and hit it in foil, now it's illadelph glass wid a glycerine coil