Cronk Nutrients – Autoflower Line Basic Feed Chart GuideUpdated 10 days ago
Program Overview
The Autoflower Line Basic Feed Program is designed for growers cultivating autoflowering plants using Cronk Nutrients. This program provides a balanced and easy-to-follow schedule that supports your plants from seedling to harvest.
The guide outlines how to mix nutrients, maintain pH, and follow week-by-week dosages for strong, consistent growth and high-quality flowers.
This program uses Bonnie during the vegetative phase and Clyde during flowering, with CalMag used throughout the grow cycle.
Mixing Instructions
Begin with clean, pH-balanced water.
During Veg, use Bonnie as your base nutrient.
During Flower, switch to Clyde as your base nutrient.
Add CalMag after the base, then optional additives if desired. Beside if using Armadillo Armour, this would go in first.
Stir thoroughly after each addition.
Recheck and adjust pH before watering.
Recommended water temperature: 68–72°F (20–22°C).
💡 Tip: Never mix Bonnie and Clyde together in the same solution. Use one base at a time based on plant stage.
Autoflower Basic Feed Schedule
Vegetative Phase (Bonnie)
| Week | Growth Stage | Bonnie (ml/gal) | Clyde (ml/gal) | CalMag (ml/gal) | pH Range | Notes |
|---|---|---|---|---|---|---|
| 1 | Seedling | 0.5 | 0 | 2 | 5.6–5.9 | Start light feeding |
| 2 | Early Veg | 2 | 0 | 2 | 5.9–6.2 | Strengthen roots & leaves |
| 3 | Mid Veg | 3.5 | 0 | 4 | 5.9–6.2 | Build strong growth |
| 4 | Late Veg | 5.5 | 0 | 4 | 5.9–6.2 | Prepare for flower transition |
Flowering Phase (Clyde)
| Week | Growth Stage | Bonnie (ml/gal) | Clyde (ml/gal) | CalMag (ml/gal) | pH Range | Notes |
|---|---|---|---|---|---|---|
| 1 | Pre-Flower | 0 | 10 | 5 | 6.0–6.4 | Transition to bloom |
| 2 | Early Flower | 0 | 12 | 5 | 6.0–6.4 | Build bud structure |
| 3 | Mid Flower | 0 | 14 | 5 | 6.0–6.4 | Peak nutrient demand |
| 4 | Mid Flower | 0 | 15 | 5 | 6.0–6.4 | Maintain density |
| 5 | Late Flower | 0 | 15 | 5 | 6.0–6.4 | Support flower finish |
| 6 | Ripen | 0 | 8 | 0 | 6.0–6.4 | Reduce feed for ripening |
| 7 | Flush | 0 | 0 | 0 | 6.0–6.4 | Use clean, pH-balanced water only |
Mixing Example – 10 Gallons
To scale your mix, multiply each nutrient rate by the number of gallons.
Example – Veg Week 3:
Bonnie: 3.5 × 10 = 35 mL
CalMag: 4 × 10 = 40 mL
Example – Flower Week 2:
Clyde: 12 × 10 = 120 mL
CalMag: 5 × 10 = 50 mL
Feeding Tips
Autoflowers prefer a steady, moderate feed—avoid overfeeding.
Reduce nitrogen (Bonnie) as you move into flower.
Check pH regularly; swings can affect nutrient uptake.
Feed every watering in coco or soilless media; in soil, alternate feedings if runoff EC is high.
Observe plant response and adjust dosage ±10–20% as needed.
Optional Additives (for Advanced Growers)
For enhanced results, you can supplement with Cronk additives:
Sticky Bandit: Boosts resin and terpene production in bloom.
Armadillo Armour: Adds silica and increases plant strength.
Monkey Juice: Improves microbial activity and root health.
Use additives at recommended rates alongside the base feed chart.
pH & Maintenance
Veg phase: 5.8–6.2
Flower phase: 6.0–6.3
Check runoff weekly; target EC ranges from 1.0–1.8 depending on medium.
Store nutrients sealed and away from light. Shake well before use.