2HR Aquarist APT SKY – Remineralizer for Aquascaping

APT SKY by 2HR Aquarist is a professional-grade mineral booster that replenishes all essential minerals in RO/RODI water without affecting NPK, KH, or pH. It gives aquascapers full control over their water parameters for the perfect planted tank balance.

Why APT SKY stands out

APT SKY solves the key problem faced by aquarists: how to increase water hardness (GH) without altering KH or NPK values. It enables shrimp and both softwater and hardwater plants to thrive together harmoniously.

Key features

• Remineralizes RO/RODI water – adds calcium and magnesium in optimal ratio
• Does not affect NPK, KH or pH
• Ideal for shrimp tanks and mixed-plant aquascapes
• Enables precise water chemistry control

Dosage

• Each 3.5g / 5ml per 60L adds approx. 12ppm Calcium and 3.5ppm Magnesium (+2.5 dGH)
• Recommended dosage: 15ml per 60L of RO/RODI water

Composition (main elements)

• Calcium (Ca): 21.5%
• Magnesium (Mg): 5.4%
• Boron (B): 7mg/L
• Copper (Cu): 1mg/L
• Iron (Fe): 0.06%
• Manganese (Mn): 17mg/L
• Molybdenum (Mo): 0.01mg/L
• Zinc (Zn): 9mg/L
• Seaweed extract: <1%

Aquarium Boutique tip

Combine APT SKY with APT Complete or APT 3 fertilizers for precise nutrient control and long-term plant health.

Shipping & conditions

Shipping within Bulgaria usually takes 1–2 business days.
For Romania and Greece delivery is 2–3 days, and for the rest of Europe 4–5 business days.

Enjoy free shipping on orders above €40.