Hay! I've been looking into getting the python water change and full system. I see people hooking it upto there bathroom sink, draining it, and then filling it. I only problem is that the only sink that hasn't been through our water softener is in the kitchen. It has no hot or cold controls on it, and I think it's 2 small for any of there adapters. Is it safe to use straight softened water? If so is it safe after I've been using hard water (400+ppm)? Anyone have experience with their python system? Does it work even just to empty the tank?