FULL INFO HERE-> https://www.2hraquarist.com/products/2hr-aquarist-apt-sky

Discover new possibilities with SKY-boosted water.
Enable shrimps and hardwater plants to thrive together with softwater plants*.
Replenish all vital minerals in RO/ RODI water with no negative altering of NPK, KH or pH.

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

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