APT Zero (200ml | 300ml | 500ml | 1L) | Nitrate & Phosphate-Free Planted Aquarium Fertilizer ? 2Hr Aquarist

APT Zero by 2Hr Aquarist is a specialized all-in-one fertilizer designed for planted aquariums where nitrate and phosphate are already present from fish waste or nutrient-rich substrates. Unlike standard fertilizers, APT Zero supplies essential minerals and trace elements without adding additional nitrate or phosphate, helping maintain balanced nutrient levels and reducing algae growth.

This lean fertilizer approach is especially useful for aquariums with high fish stocking levels, low-tech tanks, or aquasoil-based planted setups where nutrients are already abundant.

Each dose delivers important nutrients required for plant metabolism and growth, including Potassium, Magnesium, Iron, and trace elements such as Boron, Copper, Manganese, Molybdenum, and Zinc.

By providing essential nutrients without excess nitrogen or phosphorus, APT Zero helps aquarists maintain healthy plant growth while minimizing algae issues often caused by nutrient imbalance.

Key Benefits

• Nitrate-free and phosphate-free fertilizer

• Ideal for fish-heavy planted aquariums

• Helps reduce algae caused by nutrient excess

• Supplies essential minerals and trace elements

• Supports healthy plant growth and coloration

• Suitable for aquasoil and low-tech planted tanks

Dosage

Recommended dosing:

• 5ml per 100 liters four times per week, or

• 3ml per 100 liters daily depending on aquarium conditions.

Specifications

Brand: 2Hr Aquarist
Product Type: Lean All-in-One Plant Fertilizer
Suitable For: Planted Freshwater Aquariums
Key Nutrients: Potassium, Magnesium, Iron, and trace elements
Special Feature: No added nitrate or phosphate
Available Sizes: 200ml, 300ml, 500ml, 1 Liter