I decided to try the SourDo Italian starters which arrived on Friday. I mixed them up as per instructions last night and this morning they were bubbling away. The hooch was in the middle. The instructions say this is a sign of contamination and that I should wash it, which I did this morning. I checked it a few hours ago and the hooch was on the bottom, another bad sign. I didn't have time to tend to it, so I let it sit. Checked it just a little bit ago, and now the hooch is towards the top, but there is some "foam" on top. Do I wait till morning, wash again now, or feed it now?