|HYDROGEN SULFIDE PROBLEMS
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Reduless is a possible solution for minor hydrogen sulfide problems. Rate: 2-3 grams per 5 gallons, 1/2 teaspoon is ~ 2 grams.
Dissolve in 10 times its weight in water
(29.57 ml = 1 oz.). Add while agitating.Rack after
72 hours You may treat a second
time. If this fails, then we have to
resort to using Copper Sulfate.
Reduless 3 ounces (85 grams) for ~ 141-212 gallons
Copper Sulfate 1 oz
Sulfate 16 oz
When hydrogen sulfide is formed in
detectible quantities, it will usually be toward the end of fermentation. You should smell your young
wine during the first fermentation. If the rotten egg smell is evident, you should rack
the wine immediately when the problem is first discovered before using
Reduless and/or copper sulfate.
1. Rack your wine even if it is still fermenting. If the
smell hasn't disappeared in 24 hours, rack again. Aerate and splash about.
2. Dose the wine with the recommended amount of a
yeast nutrient. If you have
Reduless, use that instead for an additive at this
Dissolve Reduless in 10 times its weight in water. Add immediately to tank
mixing well. If prepared in advance, re-suspend the product prior to its addition. Additions can
be made during pump-overs or during tank agitations/mixings. Recommended contact time is 48-72
hours after homogenization. Rack off or filter the wine when treatment is complete.
can be dosed twice, if the first dosage improves but does not clear up the problem.
3. You may also
bubble an inert gas such as carbon dioxide or nitrogen through the wine.
4. If the above
steps do not correct the problem then Copper Sulfate is a