APT Sky

★★★★★ 4.6 124 reviews

$14.99
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Management number 235156735 Release Date 2026/07/02 List Price $6.00 Model Number 235156735
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Discover new possibilities with 2Hr Aquarist APT Sky boosted water. APT Sky enables shrimps and hardwater plants to thrive together with softwater plants*. APT Sky replenishes all vital minerals in RO/ RODI water with no negative altering of NPK, KH or pH values. APT Sky resolves the key conundrum of how to increase water hardness, specifically as a GH booster without altering NPK values, which interfere with the calibrated ratios of fertilisers and KH where higher values are not favoured by most commercial aquatic plants.

*To grow softwater plants, RO/RODI water is recommended if tap water measures >2 dKH)

PLAYTIME
Plants have conflicting softwater / hardwater requirements. APT Sky and APT Sky Plus 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.

SMART SAVINGS
As a GH booster, APT Sky is 3X as concentrated as conventional remineralisers. Each 3.5g per 60L adds 12ppm Calcium and 3.5ppm Magnesium, raising GH by 2.5 dGH.

SKY VS SKYPLUS
APT Sky Plus raises KH moderately to 2 dKH and buffers pH to 7.2-7.6 where as APT Sky leaves KH and pH unchanged. Use APT Sky Plus if you keep guppies, mollies and snails. Use APT Sky if you keep tetras and rare softwater plants. Both however are great for shrimp.


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4.6 out of 5
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124 ratings | 51 reviews
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