Rockwool or ???

Is cotton a good substitute for rockwool, kinda on a budget, i mean can i insert germed seeds into it for my first bubbleponic grow, yeah i know noobie question. OOOh tHey WaY i FEel now, If OnLy all were green
 
yeah but im using bubbleponics, there would be a constant supply of water and oxygen to it. my thing would be maybe too much water if anything
 
A piece of an ordinary car washing sponge would be better than cotton. Rapid rooters are the best. And yes, too much water is a concern and that's another problem with water pumps and feeder tubes.
 
cotton is organic. i imagine it would mold and break down before too long.

RW isnt that expensive. hugo blocks are like $3
 
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