I dunno-- what would the roots 'hold-on" to? What keeps them from drying out between floodings?
Don't the tube systems also have top drips or bottom misters to keep that from happening?
what do the roots hold onto ?
nothing , they sit in the tube happily enough , as long as there light tight there happy
what keeps them from drying out ?
well.............. from a world of experience anyone in the hydroponic world will bore you to tears about oxygen and roots , the simple explanation is roots revel in a mixture of water and oxygen and a process of washing water across them and allowing roots to then uptake air is the very explanation of why hydroponics can produce more yield than traditional growing methods , the plants more than enjoy the ebb and flow of food and air , they never dry out completely , you run them on a 15 minutes on and 15 off
Don't the tube systems also have top drips or bottom misters to keep that from happening?
nope , food is spat into 1 end and drops out the other back to the rez , the flowing of the water creates humidity that maintains good root life between the netpot and the tubes the roots settle in
