Noob here. I'm brewing an ESB. It's my 7th batch overall and first using Wyeast 1968. It's a full boil extract recipe w/ OG of 1.059. Pitched a starter @ 70 degrees and have kept the temp constant. I had visible activity w/in 4 hours, and within 4 days was down to 1.013 -77% attenuation. So now...