2Hr Aquarist APT SKY ? GH Booster for RO Water Planted Tanks & Shrimp-Safe Mineral Supplement
2Hr Aquarist APT SKY PLUS is a premium aquarium GH KH booster engineered for aquarists in India who rely on RO or RODI water in planted aquariums. Because RO water strips out essential minerals, this formula restores the right balance of GH and KH, while gently buffering pH between 7.2 and 7.6. So, your aquarium remains stable and suitable for sensitive livestock and diverse aquatic plants.
? Designed for Planted Tanks with Mixed Inhabitants
APT SKY PLUS is ideal for aquascapes that include shrimp, community fish, and mineral-sensitive plants. Acting as a planted tank GH KH adjuster, it helps achieve the optimal pH for community tanks and protects shrimp from sudden fluctuations. In addition, the aquatic plant mineral buffer component ensures consistent growth across softwater and hardwater species. Whether you’re running a high-tech setup or a natural scape, this product adapts beautifully.
? Stabilizes pH Without Harsh Additives
Unlike conventional hardeners, this solution works as an aquarium pH stabilizer 7.2 without harsh chemicals. As a result, it maintains the ideal buffer range for shrimp, delicate plants, and community fish. It?s also known as a fish tank pH balancer 7.5, providing stability without overpowering natural equilibrium. Plus, it encourages hardwater softwater plant coexistence, which is essential for mixed-species tanks.
? Calcium & Magnesium Support
This product doubles as an aquarium calcium magnesium supplement, boosting GH levels with precision. For example, it acts as a fish tank calcium booster while supporting root development and plant strength. And because it contains no nitrogen or phosphorus, it fits seamlessly into custom fertilization routines. You?ll find it useful as a GH mineral additive and aquatic mineral enhancer across a wide range of scapes.
? Key Benefits
- Effective RO water remineralizer pH buffer for Indian aquarists
- Safe and consistent shrimp safe GH KH remineralizer
- Supports aquarium buffer for shrimps and tropical species
- Works as a fish tank hardness pH increaser without altering other parameters
- Delivers minerals for RO water and buffers pH to 7.2?7.6
- Designed to maintain GH KH balance in planted tanks
? Why Choose APT SKY?
So, if you’re looking for a powerful yet gentle way to manage water hardness and pH, APT SKY PLUS India delivers. From remineralizing RO water to buffering KH levels and promoting aquatic health, this product covers all the bases. And because it supports both plant and livestock needs, it?s a trusted choice for balanced aquascaping across India.
Ingredients –
Ca (Calcium): 16.6%, Mg (Magnesium): 3.5%, B (Boron): 5mg/L, Cu (Copper): 1mg/L, Fe (Iron): 0.05%, Mn (Manganese): 13mg/L, Mo (Molybdenum): 0.01mg/L, Zn (Zinc): 8mg/L, Seaweed extract <1%
Dosage – Each 3.5g / 5ml per 60L adds 9ppm Ca and 2.5ppm Mg (+1.8dGH, +0.5 dKH). Recommended: 15ml per 60L of RO/RODI water.





Playtime
Plants have conflicting softwater / hardwater requirements.
APT SKY and APT SKYPLUS remove the hassle of having to choose between softwater and hardwater plants. For softwater tanks, it boosts shrimp health and reproduction.
The catch? It does require Softwater or Reverse Osmosis (RO) water to begin with. At the moment, there is no easy way to make Hardwater ?Soft?. Read More
SKY vs SKYPLUS
APT SKYPLUS?raises KH moderately to ~2 dKH and buffers pH to 7.2~7.6.?APT SKY?leaves KH and pH unchanged.
Use APT SKYPLUS if you keep guppies, mollies and snails. Use APT SKY if you keep tetras and rare softwater plants. Both are great for shrimp.
A more detailed comparison can be found?here.

Smart Savings
As a GH booster, APT SKY is ~ 3X as concentrated as conventional remineralisers. Each 3.5g / 5ml per 60L adds 12ppm Calcium and 3.5ppm Magnesiumm, raising GH by 2.5 dGH.
Did we mention that it is super-soluble, non-caking and just a joy to handle?































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