Weekly Dose
523.3 mL
Per Dose
174.4 mL
Load
Medium Tech
Total Weekly Fertilizer
523.3 mL
3x per week
As an Amazon Associate, we earn from qualifying purchases.
Inputs
Result
Each nutrient dosed 3x/week at levels appropriate for medium plant load.
Inputs
Result
High plant load with CO2 requires 1.5x standard dosing across all macro and micro nutrients daily.
It depends on plant density. Low-tech tanks need about half the dose of high-tech CO2-injected tanks. Start with recommended doses and adjust based on plant health.
| Plant Load | N Target (ppm) | P Target (ppm) | K Target (ppm) |
|---|---|---|---|
| Low Tech | 5 | 0.5 | 5 |
| Medium Tech | 10 | 1 | 10 |
| High Tech | 20 | 2 | 20 |
Estimative Index (EI) dosing adds excess nutrients so plants never run out. Weekly 50% water changes remove excess to prevent algae. Simple and effective for most tanks.
Plants absorb only what they need. Excess nutrients do not directly cause algae — poor plant health and excess light do. However, extreme overdosing can stress fish.
Dose after the water change, not before. The fresh water dilutes nutrients, so dosing immediately after restores them to target levels.
Aquarium, reptile, and pet care tools
Last Updated: Mar 19, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.