Water Soluble Fertilizer Calculator
Free calculate fertilizer concentrations, application rates, and nutrient solutions for hydroponics and fertigation.
Fertilizer Calculation
Fertilizer Solution Results
Enter parameters to calculate fertilizer requirements
Water Soluble Fertilizer Guide
Application Methods
- • Hydroponics: Direct nutrient solution
- • Fertigation: Irrigation system
- • Foliar: Spray application
- • Seedling: Gentle concentration
- • Follow manufacturer guidelines
EC Guidelines
- • Seedlings: 0.5-0.8 mS/cm
- • Vegetative: 1.0-1.5 mS/cm
- • Flowering: 1.5-2.0 mS/cm
- • Fruiting: 2.0-2.5 mS/cm
- • Monitor plant response
pH Management
- • Most crops: 5.5-6.5
- • Hydroponics: 5.8-6.2
- • Soil: 6.0-7.0
- • Check pH regularly
- • Adjust with pH up/down
Common Water Soluble Fertilizers
| Fertilizer | NPK Ratio | Use Case | EC Range |
|---|---|---|---|
| NPK 20-20-20 | 1:1:1 | General purpose | 1.0-2.0 |
| NPK 15-30-15 | 1:2:1 | Flowering | 1.2-2.2 |
| NPK 24-8-16 | 3:1:2 | Vegetative | 1.0-1.8 |
| Calcium Nitrate | 15-0-0 | Calcium supplement | 0.5-1.5 |