Fox Farm Feeding Schedule
The FoxFarm Feeding Schedule Tool is a free online calculator that helps you follow FoxFarm nutrient charts for soil, Happy Frog potting soil, and hydroponic systems. Choose your growing method and week to instantly see the correct nutrient doses per gallon. The tool also includes EC↔PPM conversion, pH and light guidance, and printable/CSV feeding charts.
Written By Roy Stevens
- Independently Reviewed
- Fact Checked
FoxFarm Feeding Tool
Helper for FoxFarm soil, Happy Frog & hydro charts. Always confirm with official charts before feeding.
EC ↔ PPM (700) Calc
Uses ~0.7 conversion factor (Hanna / 700 scale). Always compare with your meter and FoxFarm guidance.
Guidance & Notes
- Light: Veg ~18 h light; flower ~12 h, per FoxFarm charts.
- pH: Soil/soilless ~6.3–6.8; hydro/coco ~5.8–6.3.
- SledgeHammer: Use at listed weeks with fresh, pH-balanced water.
Highlighted cells mark nutrients above your chosen tsp/Tbsp-per-gallon threshold. This is a “strong mix” flag, not a safety limit.
Volume quick ref
- 1/4 tsp = 1.25 mL
- 1/2 tsp = 2.5 mL
- 1 tsp = 5 mL = 1/3 Tbsp
- 2 tsp = 10 mL = 2/3 Tbsp
- 3 tsp = 15 mL = 1 Tbsp
