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2HR Aquarist APT 3 Complete Liquid Aquarium Plant Fertilizer
  • 2HR Aquarist APT 3 Complete Liquid Aquarium Plant Fertilizer
  • Planted Aquarium with High Light Aquatic Plants
  • 2HR Aquarist APT 3 Complete Liquid Aquarium Plant Fertilizer for High Tech Planted Tanks
  • 2HR Aquarist APT 3 Complete Liquid Aquarium Plant Fertilizer
  • Planted Aquarium with High Light Aquatic Plants
  • 2HR Aquarist APT 3 Complete Liquid Aquarium Plant Fertilizer for High Tech Planted Tanks
2HR Aquarist APT 3

2HR Aquarist APT 3

$23.99 USD
Usually ships in 1-2 business days from our fulfillment center

APT 3 by 2HR Aquarist is a comprehensive, all-in-one aquarium plant fertilizer designed for established planted tanks with high nutrient needs. Its complete formula is packed with macro nutrients (NPK), iron, magnesium, and trace elements to fuel growth and boost color for even the hobby’s most demanding plants. With APT 3, grow the temperamental Rotalas, Ludwigias, and other rare plants often considered advanced in the aquascaping community.

If you have a heavily planted tank, Dutch-style aquascape, or a setup with hungry plants, APT 3 is a complete solution for achieving rich colors and strong growth without significantly increasing maintenance. Each bottle includes a calibrated pump and simple dosing, making it easy to stay on top of your aquarium’s nutrition. One bottle is estimated to last approximately 3 months based on a standard 30-gallon planted tank.

Choosing the Right APT Fertilizer
APT 3 is designed for established aquariums with dense plant growth, nutrient-demanding species, or higher lighting and CO2 injection. For newly planted tanks or setups with lighter plant mass, APT 1 offers a gentler formula for steady plant growth.

APT 3 Complete Highlights
- Ideal for heavily planted setups
- Complete formula with macro (NPK), iron, magnesium, and trace elements
- Easy daily dosing with included calibrated pump
- Looking for a gentler approach? Start with APT 1!

Size: 300ml / 10.14FL Oz.
Dosing Instructions: Add 3 pumps per 26 gallons of water daily.

Shop 2HR Aquarist APT 3 liquid aquarium plant fertilizer at Glass Aqua

TIP! If you are starting off with a fresh aquascape or have a densely planted setup, start with APT 1 during the first 1-3 months. Monitor growth over time and when plants are mature and nutrient requirements increase, transition to APT 3 to support continued growth!

Guaranteed Analysis

Total Nitrogen (N) 0.75%
0.75% Nitrate Nitrogen
Available Phosphoric Acid (P2O5 0.69%
Soluble Potash (K2O) 4.52%
Magnesium (Mg) 1.10%
Iron (Fe) 0.12%

0.12% Chelated Iron
Derived from: Potassium Sulphate, PotassiumPhosphate, Potassium Chloride, Magnesium Nitrate, Magnesium Sulphate, DTPA Iron, EDTA Iron, EDDHA Iron
About The Brand
2Hr Aquarist is trusted for exceptional liquid fertilizers and water treatments that focus on beautiful aquarium plant growth. Co-founder Dennis Wang has spent many years in the planted tank hobby, furthering and sharing his aquatic plant knowledge with the community. He has become a trusted source for cultivating and understanding some of the most difficult and rare plants in aquascaping today.
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Shipping, Returns and Refunds

Shipping
Orders are typically processed within 1-2 business days M-F. However, additional time may be required during peak seasons and federal holidays. For orders containing live plants, we exercise extra caution and assess factors such as travel distance and weather to ensure safe transit.

To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.

Returns
If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.

Refunds
No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.