One for the coldwater fans

Trying to help a friend out i said i'd buy her tank but its come with 8 goldfish am sure theres a couple of comets in there but no idea about the rest. Will try get some pics up later on once the tanks settled a bit but for now what are the ideal water parameters for them? Have used hma water at 7.6 ph for now mixed with the original tank water which was filthy so there will be high ammonia till i get a couple of water changes done.

its just tap water mate and plenty of water changes as they are big feeders

most of these are a good size don't know if they'd be any good for you mick

comets and shubunkins i think any good to anyone?