I am doing a IPA and have white labs wl007 in a magnetic stir plate. I used the directions off of the white labs website; 1/4 c of DME with 1 quart of water. I have had it on the stir plate for 24 hours now. When I turn it off, there are ZERO bubbles. The yeast is settles on the bottom of the flask, and the liquid is cloudy. What is going on?! Is my yeast dead? Is it supposed to look like this (no bubbles)? The last time I did a starter, it was very evident that the yeast was active.