Regular Member xchairity_casex Posted September 10, 2011 Regular Member Share Posted September 10, 2011 hello i have a random question about water softeners i know that you have to use large amounts of rock salt and that softend water has alrge salt content so if you use it for fish tanks can that be harmful for fish? 0 Quote Link to comment Share on other sites More sharing options...
Regular Member mikroll Posted September 11, 2011 Regular Member Share Posted September 11, 2011 I have a water softner , the rock salt is used to clean the resin in the filter , The salt does not enter in to the water system but is flushed out with the hard products into the drain. 0 Quote Link to comment Share on other sites More sharing options...
Regular Member Erica Stolte Posted September 11, 2011 Regular Member Share Posted September 11, 2011 I used to use water softened in this method for fish. I don't think it's harmful, however I think if you wanted to soften water for fish, RO is a preferred method. 0 Quote Link to comment Share on other sites More sharing options...
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