I had recently just moved and had to transport my fish about 5 miles away. I transported all of my fish in a 30 gallon rubbermaid cont. w/ the original pond water. Of course cover the container....Then they were put in a 100 gallon stock tank in good water. The stock tank will turn into the bio filter for the new 2500 gal pond. Now for the bad news. Not realizing that fish will act different in new enviroments I failed to forsee this and 2 of the 10 fish I had jumped out. I should've covered the tank too. I nursed one back, the other is in fish heaven. I had a larger koi in th group, maybe 4 pounds that was transported w/ the others. He developed a bacterial infection w/ in a week in the new pond. He/she also is fish heaven. I read from this forum larger fish are more prone to disease from stress. I should've put that fish in a larger container alone. Other fish were showing signs of infection so I immediately shocked the pond with an anti bacterial med. from Tetra (Not sure of the name) but it is also used for new introductions into new ponds. It works well no other losses so far. The pond is on its 5th week. Plants, frogs and fish are now thriving. Good luck on your transport.