Hi all... I'm an extract brewer. I've recently upgraded from a 5 gallon kettle, brewing 3 gallons water and topping off, to a new 8.5 gallon kettle in which I plan to start with 5.7 gallons for a 5 gallon batch. I'm making a single hop Azacca American IPA recipe in Beersmith. When I changed equipment profiles from 3 gallon boil volume to 5 gallon boil volume, my IBUs shot up exponentially. Why should I need less hops in a larger amount of water? It says I can get 73 IBU with 1 oz Azacca, but that just seems like too little of hops. Should I stick with the 3 oz that I was originally planning to use?