So I put together my homemade stirplate 2 weeks ago, and purchased a 1000ml flask. I boiled maybe 850ml of water with 3 ounzes of DME in the flask, cooled to 70, added a vial of liquid yeast (Ringwood). This gave me the 1000ml needed. I placed tin foil on top and let the stiplate do its job. Later that night the yeast was bubbling out of the flask. I assumed I shouldn't have used that great of a volume. What volume of a starter would you suggest when using a 1000ml flask?