APT EI (Estimative Index) (200ml | 300ml | 500ml | 1L) | All-in-One Fertilizer for Planted Aquariums ? 2Hr Aquarist

APT EI by 2Hr Aquarist is a powerful all-in-one fertilizer developed using the Estimative Index (EI) fertilization concept, a widely used nutrient dosing method in high-tech planted aquariums. This method ensures that plants always receive sufficient nutrients, preventing nutrient limitations and promoting vigorous growth.

APT EI provides a rich supply of macro nutrients such as Nitrogen (N), Phosphorus (P), and Potassium (K) along with Magnesium, Iron, and essential trace elements required for healthy plant metabolism.

This fertilizer is specifically designed for high-light planted aquariums with CO? injection, where plants grow rapidly and require a consistent supply of nutrients. When used with regular water changes, APT EI helps maintain balanced nutrient levels while maximizing plant growth and coloration.

Key Benefits:

• High-nutrient fertilizer based on the Estimative Index method

• Provides complete macro and micro nutrients

• Supports rapid plant growth and dense aquascapes

• Ideal for high-tech planted aquariums with CO? injection

• Promotes vibrant plant coloration and healthy leaves

• Convenient all-in-one liquid fertilizer

Dosage:

Recommended dosing:

• 5ml per 100 liters daily, depending on plant density and lighting conditions.

• Weekly water changes are recommended when following the Estimative Index method.

Specifications:

Brand: 2Hr Aquarist
Product Type: High-Nutrient All-in-One Plant Fertilizer
Suitable For: High-Tech Planted Freshwater Aquariums
Fertilization Method: Estimative Index (EI)
Available Sizes: 200ml, 300ml, 500ml, 1L