Brewed my first batch ever last Saturday. Started with a kit, but then added an additional 3.15 lbs of lme or a total of 9.75 lbs lme, and 1 lb caramalt. Safale US-05 yeast, pitched directly onto wort. OG, prior to pitch, was 1.050. This seems low. My guess is that this reading is off as I didn’t mix the worth after adding additional water to bring it to 5 gallongs. Wort was on the cool side, 62 degrees, when I pitched. After about 10 hours or so, fermenting nicely and after about 24 going strongly. I did not aerate at all and did not stir in yeast.
After 3 days in primary, racked to secondary. Ferementation was still very active at that time. So, I racked it too early into the secondary. Directions I was working with said rack into secondary in 2-3 days so that is what I did. But, directions did not account for the additional 3.15 lbs of lme I added. Nonetheless, fermantation still appears to be moving along nicely. Been in secondary for about 5 days. Still fermenting nicely.
Question 1 - Did I pitch enough yeast? If not, is there anything I should do now?
Question 2 - Why should wort be aerated? I thought that, generally oxygen was bad for beer.
Thanks in advance for the responses.