Just made my first brew yesterday, a Pliny the Elder clone, and got the carboy filled and set-up with a spill off tube and bucket. Everything went really well in the boil and set-up. But tonight I checked on it and the spill off tube had fallen out. Now there are brown spots and some white chunks in the foam and I'm worried it is mold. Wasn't sure if it was clumps of yeast or mold, as I don't know what it should look like. Fixed it and now its begun bubbling. Just wondering if it looks like mold and if it has completely ruined the batch?