Originally Posted by olusteebus
This is a dumb question or statement I guess but I have read and have not seen an answer. Is this device applied after the secondary ferment and after stabilizing?
It is not good during active fermentation. The CO2 will blow it off.
However, I am in the final stages of fermenting a port, and it is fine. The port has been degassed, and is at 1.020. It is currently dropping about .001 every few days. Easy enough to turn on the AIO every few days.
So, if the wine is [mostly] degassed, and not fermenting actively (including after stabilizing), you can use the HE.