My understanding is that generally (with the possible exception of starters) yeast nutrient and energizer are not really needed for beer, as the barley provides basically everything required. However, is there any possible downside to adding them? Obviously using it when it adds no value is wasteful but is there anything in yeast nutrient or yeast energizer that would adversely affect the beer if too much is present in the final product? On the other end, the yeast energizer I …

My OG might be a little lower than expected. I'm not sure if my reading was accurate since I took it a day after fermentation began via the spigot at the bottom of my bucket. Reading was 1.030. In a few days I'm transferring it to a secondary fermenter, where I will be adding more pumpkin. Can I add an energizer? And can I also add brown sugar or something like that to increase my ABV?