I have 2 goldfish that were a "centerpiece " at a party 4 years ago. They are in a 10 gallon tank with a filter and gravel. They have outgrown the tank (probably 10 inches of fish now) and the tank is always getting cloudy. I have set up a forty gallon tank, added water treatment and tank cycle and run the filter for 48 hours. Can I float the fish for a bit in the new tank then add them now? How often do I need to test the water as the tank begins to cycle? I really want these fish to do well, they have grown into real beauties!