Here’s the recipe I used. It worked great.
4 buckets total. (Recipe is for 5 gallon buckets but we use 20 gallon buckets for large stems)
Bucket 1: Filtered lukewarm water with 32 to 64 oz 3% peroxide.
Bucket 2: Filtered lukewarm water with 1/4 cup baking soda, 1/4 cup lemon juice
Bucket 3: Hot filtered water only. (Tap hot – not boiling)
Bucket 4: Cold (not icy) filtered water only.
Fully submerge in bucket 1 with the peroxide for 30 seconds. Submerge for a full minute if you had powdery mildew or bud rot at any time during the grow. Let water drip from buds, and then:
Fully submerge in buckets 2 through 4 for 30 seconds each . . . lightly stirring.