2Hr Aquarist APT SKY PLUS – Advanced RO / RODI Water Remineralisation

APT SKY PLUS unlocks new aquascaping possibilities by allowing shrimp, hardwater plants, and softwater plants to thrive together in a single aquarium.

Designed specifically for RO / RODI water, SKY PLUS replenishes essential minerals without altering NPK values, preserving the carefully calibrated ratios of liquid fertilisers. It primarily boosts GH, while moderately raising KH (~2 dKH) and stabilizing pH between 7.2 and 7.6, a range still favored by most commercial aquatic plants.

Why APT SKY PLUS?

One of the biggest challenges with RO-based aquariums is increasing water hardness without disrupting nutrient balance.

APT SKY PLUS solves this by delivering targeted calcium and magnesium supplementation, maintaining full compatibility with fertiliser systems and ensuring stable, predictable water chemistry.

Ideal for aquascapers seeking maximum control and flexibility.

Effect per dose

• 3.5 g / 5 ml per 60 L:

  • +9 ppm Calcium

  • +2.5 ppm Magnesium

  • +1.8 dGH

  • +0.5 dKH

👉 Recommended dosage: 15 ml per 60 L of RO / RODI water

Recommended Use

• For RO / RODI water only

• Fully compatible with APT fertilisers (no NPK interference)

• Ideal when tap water exceeds 2 dKH

• Suitable for planted shrimp aquariums

Key Benefits

• Replenishes minerals without affecting NPK

• Shrimp & plants thrive together

• Precise GH enhancement

• Moderate KH increase, stable pH

Website: 2hr Aquarist APT-Sky Plus