SoftWaterWare is an electronic version of the Pearson's Square, and allows the aquarist to quickly work out the ratios of (hard) tap water to (soft) rainwater required to make up water of a desired hardness for the aquarium. Freeware.
Version 1.0.3: Release notes were unavailable when this listing was updated.
RequirementsMac OS X 10.1 or later
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