these types of sips do not use mesh,,, the earth box and the grow box,, no mesh
these types of sips are designed to have lots and lots of water roots,, the earth box , the grow box and the octopots are hydro/soil hybrids, we count on water roots, and they grow big and lush just like a DWC,, i count on my water roots being alive and healthy and providing hydroponic type growth without the hydro work,,
my roots are alive and lush and filling the res by the thousands,, and without air strone,
if i were to let the res run out of water,, or water from the top my plants would suffer really bad
i think we are using 2 differant types of sips