On Oct 14, 1:53 pm, Darin wrote:
On Oct 14, 9:29 am, Ric wrote:





This does seem early to develop H2S problems. And the OP says that he
'stirred very well' as well as adding DAP, which may account for the
remedy.

I'd agree with Joe - and would do both. Add, as the OP has already
done, some more DAP, and also splash rack it. The oxygen introduced at
this stage is unlikely to ruin the wine yet will aid in the
fermentation.

I thought I had managed to remedy my H2S problems of recent years by
increasing my nutrient and DAP dosages this year. But the Merlot still
developed a hint of a smell a day or two after pressing. I immediately
splash racked it, and then again. Some few days later now and no hint
of any smells. All other wines seem to have avoided the curse.

On 2007-10-13 02:56:22 -0700, Joe Sallustio said:

I am not at all sure I have good success adding DAP to fermenting
wine. Your brix is still pretty high, you may just need to oxygenate
it. Have you considered a pump over or rack with splashing? I
realize this is a white but this is pretty early in the ferment to
develop a nitrogen deficiency. I would do that first and then
consider the nutrients.

Joe- Hide quoted text -

- Show quoted text -

James, Joe & Rick - Thanks a lot - I really appreciate your views and
suggestions.

I too thought it was odd to have H2S so early in a ferment, especially
when I had added nutrients pre-inoculation. I'm starting to think I
should investigate means of determining YAN for the future... This
Chard has had a couple of curve-balls to-date, including a stinky
reconditioned barrel that I bought and had to send back. I hope there
isn't a third problem waiting behind the curtains...

In my OP, I mentioned I added DAP and stirred in vigorously. This
seems to have done the trick, and my cellar, basement, and to some
extent house, have that lovely smell of both Chard and Syrah
fermenting. What a fantastic time of year it is!

Thanks again for the help.- Hide quoted text -

- Show quoted text -

This may sound goofy but if it comes back you might want to get a
cheap aquarium pump and push some air through it for a few minutes. I
did that once to speed up a batch of vinegar when we were running
low...


Joe
Joe