I have always just taken a clone of each plant the day it goes into flower, then when the clone starts new growth immediately top it, immediately after it recovers super crop it, as soon as it recovers transplant it each thing shocks the plant buying you enough time on a spot to open up to...
It does create back pressure but still functioning, I'm about to upgrade again I found a kitchen range hood that will fit... 190 cfm, built in carbon filter