Fermaid K vs O

[Wild Duk]

I'm staring 100# of frozen Malbec grapes. What is the difference between using Fermaid K vs O. Is one better that the other.

Thx

 

[ibglowin]

One has DAP one does not. They are both very good products.

 

[Wild Duk]

Ok thx. And it's 2 additions at 1g per gallon of must, right? So I'm fermenting 10gallons, 50ish # of crushed grapes. So should I add 10g first addiction and 10g at 1/3 completion, or should I aim for what my final pressed must amount would be. Maybe 6.5 to 7 gallons....

 

[ibglowin]

No, it is 10G in TOTAL. I add 1/2 the TOTAL amount 24 hours after yeast pitch and the the other half 48 hours after that.