ClockworkOrange
+SATOR AREPO TENET OPERA ROTAS+
that would allow the smaller roots to have access to the hot kind soil mix, if there was no cup around the roots they would get nute burn before they were big enough to handle it
Not so sure about that since there is a hole at the bottom and they will touch the hot soil when they grow out of it when i understood it correct, i mean when they got 3-4 nodes they are in my opinion ready to boost