Originally Posted by Jester
I guess theres no perfect amount of time... I got my kit for William's Brewing and the paper said 5 minutes... can you over aerate wort..??
I don't think so. It's just a balance between how much you want to aerate and how soon you want to get that fermenter closed. (Both are good goals.)
Maybe you have a more powerful pump: I don't think mine would ever foam up that much in 5 minutes--I usually run it more like 20 minutes.
If you're going to put top-off water in, you can aerate first, which helps control the foaming. (Just be sure to note the exact amount of top-off water you need before you aerate, because it's hard to get an accurate volume reading after you've frothed it all up.)