I assume a final SG OF 0.099, so I adjust the water for a specific alcohol content. For example if I set the SG at 1.070 I will end up with a wine that is approximately 10%. I’ve been told that a 10% wine will keep better.
I do bottle aging so the max time under AIO headspace eliminator is probably 8-10 weeks. I haven’t had any problem.
P.S. Steve is great. I’m 74 with a bad back. I don’t think I could still make wine if it wasn’t for Steve and his AIO pump!
I use an All-In-One wine pump to pull a vacuum. Topping up isn’t necessary if you wine is under a vacuum. I also determine the amount of water to add at the beginning by SG, that way I can get the approximate alcohol I want.