2Hr Aquarist APT Zero

2Hr Aquarist APT Zero – Nutrient-Rich All-in-One Plant Fertilizer (Zero N & P)

APT Zero is the nitrate- and phosphate-free version of APT Complete, formulated for tanks with high fish loads, low-tech or softwater setups, and New ADA-style dosing systems. It provides essential nutrients without fueling algae.

Key Features & Benefits

Zero nitrates & phosphates: Ideal for sparsely planted or fish-heavy aquariums.
Essential macro & micro nutrients: Adds ~3.8 ppm K, 0.5 ppm Mg, 0.05 ppm Fe, plus trace B, Cu, Mn, Mo, and Zn per 5 ml dose per 100 L.
High-potency formula: Longer-lasting & lean composition designed for maximum algae control.
Adaptable dosing: 5 ml per 100 L four times weekly, or 3 ml per 100 L daily—supports consistency and flexibility.

Usage Guidelines

Shake well before use.
Add 5 ml per 100 L four times weekly, or 3 ml per 100 L daily.
Works especially well in low-tech, non-CO₂, or fish-heavy aquariums.

Technical Specifications

Feature	Details

Potassium (K)	7 % of solution (~3.8 ppm per dose)
Magnesium (Mg)	0.5 ppm per dose
Iron (Fe)	0.05 ppm per dose
Trace Elements	B, Cu, Mn, Mo, Zn
Form	Water-soluble liquid fertilizer

Why Choose APT Zero?

Provides vital plant nutrition without raising nitrate or phosphate levels.
Safe for low-tech, fish-dominant, and tightly balanced aquascapes.
Highly concentrated formula offers better value with less frequent dosing.
Trusted by aquascapers replicating ADA-style fertilization in high-bio-load tanks.

Select Size (L): 1L, 500ml, 300ml, 200ml
Weight: 0.25 kg
Dimensions: 10 × 10 × 10 cm

Shipping

Delivery in 2-5 Days. Express delivery is available at checkout for an additional fee.

Returns

We accept returns within 3 days of delivery. Items must be unused and in their original packaging.

2Hr Aquarist

The story of The 2Hr Aquarist begins on the sunny island of Singapore, at the crossroads of East and West and one the world’s largest trading hubs of aquarium fish and plants. In 2015, well-known aquarist and aquascaper Dennis Wong started a youtube channel to share his techniques in growing aquatic plants and long-term maintenance of freshwater aquariums. Followers started experiencing the results that came with his approach (success with growing some of the hobby’s most difficult plants, controlling algae, attaining previously ‘impossible’ richness of colours and form) and started sharing the news with others. This led to the development of The 2Hr Aquarist, an organization dedicated to providing the tools and resources for enthusiasts across the world to achieve mastery of the freshwater planted aquarium. We have since grown to become a diverse and entrepreneurial team with over 20 years of combined experience in research, product development, international sales and distribution, marketing and communications. Most importantly, we are aquarists ourselves and enjoy the art and science of the freshwater aquarium. We are grounded by facts and empirical results. We use what we sell and practice what we write.