A week or so ago I built a stir plate and decided to try to collect some wild yeast with it. I put a little wort on it and let it fly. After a few days I threw in the dregs from a bottle of saison de buff. Up until then it still smelled like wort. By the next day it was smelling clovey/yeasty just as I hoped it would. Now after a few more days it's getting really funky and sour smelling. Yesterday I took it off of the stir plate for 10 hours or so while making a starter for an IPA. There was about half an inch of sediment at the bottom. Now, after putting it back on the stir plate and leaving it overnight, it's forming a pellicle over the vortex. Should I leave it on the stir plate for a while or should I take it off of the stir plate? I'm hoping to make a big saison or lambic with this next weekend. Is that too soon?