Details
2HR Aquarist APT Estimative Index – Precision Dosing for Advanced Aquascapes
Take the guesswork out of nutrient dosing with this ready-to-use formula.
APT Estimative Index by 2HR Aquarist is a concentrated liquid fertilizer designed for high-tech planted aquariums. Based on Tom Barr’s renowned Estimative Index method, it delivers a complete macro and micro nutrient profile to support lush plant growth, vibrant coloration, and algae control. Ideal for tanks with strong lighting and consistent CO₂ injection.
Dosing Instructions:
- Standard: 5ml per 100L, four times a week
 - Daily: 3ml per 100L
 - Shake well before use
 
Key Benefits:
- Supports robust growth in demanding aquatic plants
 - Improves leaf coloration and density
 - Helps prevent nutrient deficiencies and algae outbreaks
 - Compatible with APT Complete and APT Zero for tailored dosing
 
Specifications:
- Volume: 200ml
 - Application: Planted Aquarium Fertilizer
 - Country of Origin: Germany
 
APT Estimative Index, 2HR Aquarist fertilizer, planted tank nutrients, Tom Barr EI method, aquarium macro dosing, high-tech aquascaping
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