The cold water tank in my loft split this morning - lost of water damage to ceiling below... the water damage I can handle. Think it's a 50 gallon tank (1200x600x600). Just have no idea when it comes to plumbing jobs. Now need to get it replaced asap - what are my options? What can I expect to pay for a plumber to do the whole job? Is it worth buying the tank myself and finding a plumber to fit it for me? Your advice would be appreciated.