Yeast Nutrient Calculator
Calculate staggered nutrient additions (SNA / TOSNA 3.0) and YAN requirements for clean, healthy fermentations.
1.000 (0°Bx)
1.200 (46°Bx)
0.5 Gal
30 Gal
Target YAN Requirement
PPM
Calculated at
Total Fermaid O Required
Four equal additions of
1/3 Sugar Break Gravity
Do not add nutrients past this gravity
4-Stage Feeding Schedule
Stage 1
24h After Pitch
Stage 2
48h After Pitch
Stage 3
72h After Pitch
Stage 4
1/3 Sugar Break
TOSNA 3.0 Nutrient Guidance
TOSNA (Two-Stage Organic Nutrient Addition) uses 100% organic nitrogen (Fermaid O) which produces smoother, cleaner fermentations with less heat and lower risk of fusel alcohols compared to inorganic DAP salts.