Hello! Yesterday finished my first all-grain brew hitting fantastic efficiency of 85%. Hooray:rockin:. The thing that i did not understand however and I could not find this anywhere : I use fly sparging and it is pretty slow(took me about an hour coz i lack equipment). The already filtered wort drops from 168F(75C) to about 145F(62C). Is this normal? Should i keep 168deg in already filtered wort, or only in grain bed? How much can I cool down filtered wort? Maybe even store it to split brewing in half? What is going on in the filtered wort pre-boil?