Alright i have a 55 g fish tank and have 4 white cloud mountain minnows, 4 silver tips, 1 tiger barb, 2 clown loaches, and 2 silver dollars, and two plecos. And i know that i have very hard water and i was wondering if there was anything you could do to help the hardness go down? i have just been adding water to the tank cuz i already know that when you have to fill up the tank every 3 days you have hard water because all pure water evaporated.So to repeat what i want to know, is there any way to make the hardness of water go down?