Ok thanks, so i will not add extra yeast. I'm preparing the starter, i have 1 pack of wyeast 1762 produced on 23 November. I will brew 2 beers of 1100 and 1105 OG, and 2,5 gallons each batch (9,5 liters each batch) , if i make a starter of 1045 gravity and 2,5 - 2,6 liters, will it be enough to...