I am new to soil so this is something I need to learn a little more about before the time comes when I need to carry out this strenuous feat. I am thinking about using a 3'x3' pan with a hose attached leading out a window. i plan on flushing them on a grow table inside the grow room. i understand the first time i will need to flush them is before they go into bloom. is there anything i need to keep in mind or look out for when i go to flush? or any special procedures I should take note of? thanks for your help guys.