On thursday my friends and I are gonna wake up extra early and brew 12 gallons of an IPA.
My plan is to measure out the strike water the night before so I can wake up and start heating it right away. He seems to think the water will be "stagnant" and not good for brewing. I think its fine since it will be heated up and then boiled.
The water isn't going to go stagnant. If you're using tap water then it gives the water a chance to come to room temp before heating it up meaning a bit shorter brew day. It's what I do even though I'm brewing extract not AG. Temp is temp, though.
You are boiling the water so it doesn't really matter that you've let the water sit over night. No difference.
Water can sit for a while. My water isn't the best so I often bring ten gallons home from work. Sometimes it sits for a week before I brew. I carry the water in 5 gallon coleman water jugs or a ten gallon cooler. So far no problems