Increasing the hardness of R/O water for Central American fish


How would you increase the hardness of R/O water for fish from Central America?

I recommend increasing the hardness with sera mineral salt to approximately 6 - 8 °dKH and, accordingly, approximately 13 - 17 °dGH, unless the fish originate from water unusually soft for Central America. Considering the question, I mainly think of Livebearers, Goodeids and Cichlids from the former collective genus "Cichlasoma", which do well in medium hard and neutral to slightly alkaline water.

Best regards

sera GmbH

Dr. Bodo Schnell


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