'Roe Pure Sodium Hydrogen Carbonate (concentrate) in a handy squeeze bottle. To increase the carbonate hardness on approximately 7-8 KH. Especially suitable for smaller aquariums. In combination with "Calcium +" and "mineral salt + for limescale supply of fresh water aquariums. Dosage: On a 200 l aquarium: 2/5 ml daily or 10/35 ml once a week. The KH value must be checked on a regular basis.
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