Originally Posted by Pabst Blue Robot
...Personally, I collect small amounts, a quart or two at a time, and pour back gently, but I'm using a cube and the grain bed is pretty deep.
Same here. I have a plastic measuring cup I use. I just catch a few measuring cups full till it runs clear, and return it right to the top of the bed without much disturbance to it.
I have seen people use tin foil, by just laying it over the top of their grain bed, and pour their first runnings over it. That works like a charm it seems.