Often I’m presented only with a problem “my fish are ...

Water Hardness. Water hardness is a measure of dissolved compounds (e.g., magnesium carbonate, calcium carbonate) in the water. These compounds can precipitate out in boilers and water heaters (scaling). Hard water makes less suds with soap and detergent, so you need to use more soap and detergent to get clothes and dishes clean with hard water. ................
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