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I bought two of these recently and decided to test them with boiling water instead of wort, and noticed an oil slick in my kettle after circulating. Upon finding this, I took the pumps apart and found the insides coated in a dark gray grease. I know these are advertised as food safe but can they...

Its finally done! After our mid-summer heat wave and temperatures in my basement (where I normally ferment) reached 85+, I decided it was time to make a fermentation chamber. I really wanted to make my own temperature controller rather than just buy one. I started with a magic chef mini/dorm...

I just received an online order including a package of wyeast 1056 (with cold pack packaging), but the box was damaged, and ended up breaking the inner nutrient packet., so its already swelled. I don't plan on using this yeast for at least a week, so is it/ will it still be viable?

I plan to build a fermentation chamber from a dorm fridge and a temp controller from an arduino, but have a few questions before I start: Do I need to build any sort of vent to allow CO2 to escape? How long is a typical cool down time for a fridge compressor? I'd be afraid of destroying it...

After 3 weeks in primary with 1 week at a steady fg of 1.012, I decided to cold crash yesterday afternoon, and I woke up to this. Looks like an oil slick to the right, and possibly some form of infection (was not there before I stuck it in the fridge). So is it an infection? And if so, what...

So I took the lid off my bucket to check the gravity of my beer in secondary, but I forgot to snap it back on, and just let it rest on top for ~5 days by accident. I'm not too worried about contamination, just about oxygen exposure. Would this be enough exposure to air to cause off flavors? Thanks.