ive got ro water unit i used to use it but at the end of a run the fruit never used to get solid and hard so i went back to tape water and they got solid and hard but i think it was becuase i didn't add calmag yeh i know what ya saying they look alot healthy with ro water especially when our tape water .40 ecIf you don't have access to ro water go to Woolworths and buy refresh brand water in a 5 litre bottles ..or purea in a 5 or 10 litre cask...Best weater available on market free from all impurities ,, clorine and bacteria and its about $4 for 5litre or$7-8 for 10