After reading pure water is great for aquariums I decided last night to spruce the fish tank up so a trip to pets at home and 50 quid later and few ornaments home I went Hours later tank all clean and pure water in looks nice,I'm now eager to wake this morn to see my beautiful tropical crystal clear water!!!!! I must say wow the water is crystal crystal clear but then I notice where's my fish???all laid on the bottom not moving!!! Yikes the kids will kill me!!