Friday, July 31, 2009

Lazy Man Carboy Cleaning

This is my cleaning procedure for glass carboys used as primary (or secondary) fermenters, adapted from my Lazy Man Keg Cleaning procedure. Yes, it is designed for lazy men and women. Are you lazy?

Cleaning Procedure

  1. Halfheartedly rinse trub out of carboy with 1/2 gallon of water. Really. Halfheartedly.
  2. Place carboy in the location it will sit for up to 7 days. Location should allow for some water+Oxyclean spillage.
  3. Add 6 tbsp Oxyclean Free to empty carboy (one tbsp for every gallon, plus one extra for fun).
  4. Fill carboy with water just until it overflows.
    1. Make sure it is water and not just bubbles that is overflowing.
    2. Cold tap water is fine.
    3. There is no need to stir in the Oxyclean.
    4. I use a hose.
    5. I do not cover the mouth with anything.
  5. Wait 1 - 7 days. (From my experience, I no longer see any bubbling activity after one week. Letting it sit indefinitely should not be a problem. I've read that one day is sufficient time for the cleaning action to complete.)

Rinsing Procedure

  1. Filled carboys are heavy! Siphon is our friend! Siphon the cleaning solution out of the carboy. Do something else while it is emptying (like step one above).
  2. Repeat step 1 for each carboy you are cleaning, preferably in parallel.
  3. Use either the last remaining gallon of cleaning solution in the carboy, or a fresh gallon of water (or both) to swirl out the remaining muck in the carboy. (Many rinsing steps remain, so don't stress this step too much. Just make sure the walls looks clean.)
  4. Add approximately one shotglass of distilled white vinegar and approximately one gallon of water directly to the carboy. You must use distilled vinegar!
  5. Seal the carboy with a solid stopper.
  6. Swirl carboy mildly, then invert and mildly swirl inverted carboy.
  7. Lay carboy on its side on a soft surface. DO NOT LAY ON CONCRETE as the next steps may introduce stress fractures that could eventually lead to a dangerously shatter-prone carboy. Grass is great. Other surfaces?
  8. Using your foot to push, roll carboy. Do approximately three revolutions in about 10 seconds.
  9. Remove stopper and dump vinegar.
  10. Add about a gallon of fresh tap water to carboy. Repeat steps 5 - 9, then dump out water. You can probably skip this step, since it will be followed by a Sanitizer Rinse.
  11. Repeat steps 3 - 10 for each carboy you are rinsing.

Sanitizing Procedure

  1. Add about a gallon of sanitizer to carboy. Repeat steps 5 - 9 of the Rinsing Procedure, then dump or save sanitizer.

Alternatives

As is the case with the Lazy Man Keg Cleaning, the Vinegar Rinse may be unnecessary if replaced by a Star San Rinse.

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