i think its just for handling purposes really. the plastic makes them not fall apart, prevents plants from growing together, and slows down how long the cubes take to dry out.
assuming you can adjust your water cycle to fit the needs of the cubes...i dont think it will much matter how fast they dry out.
air pruning is something i typically see related to tree's. no idea how mj's roots will respond to it..but those new "smart pots" rely on the same principals of air pruning and claim to be the greatest shit since sliced bread.... so why not cut em off and give it a twirl?
good call on the algae pesci...most people that unwrap the cubes fill the table with hydroton. others just drape panda plastic over the whole thing...but thats a pain in the butt with alot of plants.
they even sell 4" plastic rockwool top covers to make the whole square light proof. |