I would first like to say i purchased a new tank and am upgrading from my 24 gallon Nano cube to a 72 gallon bowfront with overflow, wet/dry, uv sterilizer, protein skimmer, etc....ill provide the specs once i get back to my other house where it was moved to. So my issue was this tank had been established for almost two years before i purchased it. I had a gentlemen with me who was very knowldegable about tanks and has owned many but i still ran into issues with the transfer. The breakdown was done monday and i have already lost three fish since yesterday. We seperated the larger fish into different buckets and the smaller ones in their own as well. Currently, i have added some of the smaller ones (gamma, chromie,etc) to my existing tank and their fine. The larger ones were set up in the kitchen in a trash can until the cycling of the new tank was finished. In the trash can was the orginal water from his tank set up with two 300 pumps(facing each other), a temp gauge, and a heater. I have so far lost a large goby, a large beautiful Majestic angel, and a large foxface within the first 24 hours and i dont understand why. A large clown fish is the only thing left in the trash can and he seems fine. Any input as to why this occured or was it just form the shock? I apologize if i am not as detailed as i should be. I have owned a tank for over a year now and just joined via my friends recommenddation. Thanks...