View Full Version : Fermaid O vs. Fermaid K

09-17-2016, 10:25 AM
I have been using Fermaid O because the TOSNA equation recommends that. However some of the recipes i have call for Fermaid K. While similar, i know these two have very different nitrogen amounts.
I also have DAP and yeast energizer on hand.
Can anyone recommend any quick conversions of Fermaid O to Fermaid K using more/less DAP to compensate?
I can order Fermaid K in the mail (none of the local places here carry either Fermaid and have yeast energizer instead) but was wondering you guys' thoughts on this before i do anything.


09-17-2016, 10:39 AM
This video might help:


Make sure you look at the notes underneath it.

09-17-2016, 11:52 AM
The TiOSNA protocol was created to use Fermaid K. It takes half as much Fermaid K as Fermaid O.