Deltec Hy Carb - Pure Natural Carbonate Granulate Shake the vial to mix

Shake the vial to mix the solution well

Pour the contents of the vial into the aquarium

Reef Crystals® represents a major advancement in aquarium maintenance

so they don’t need constant dosing

After the running-in period

Deltec Hy Carb - Pure Natural Carbonate Granulate Shake the vial to mixDeltec Aqua Crown Hy Carb Deltec Hy Carb is a phosphate free, granular calcium reactor media specifically designed for use in Deltec fluidized bed calcium reactors. It's a pure, natural granulate that helps increase calcium and magnesium levels in marine aquariums. It's often used in conjunction with Deltec HyMag (a pure magnesium granulate) to achieve a desired magnesium concentration.