Fish tank is now clear

I have a 55 gallon fish tank.  We filled the tank and the water was immediately cloudy and dirty.  My mother called RainSoft and they came out to replace the old system.  Our water is now clear and the fish tank is now crystal clear.  When I tested the water with the test strips, it tested negative on all levels, water hardness was 0!  We were amaxed! I only wish we had taken a picture of my tank before the RainSoft system was put in to our home!  The difference in the quality of water is amazing!