Hello, i recently healed a tank of 3 goldfish and one eel (dont know what it is) of velvet disease and fin rot but there in a cold water aquarium, the tank is way too small for them and i want to put the in my outside pond. But at the moment they are to small, so i was wondering weather or not i could put them in an 80L Pond and let them grow for a while before eventually putting them in the main pond. Would this work or am i just being stupid? The reason i am asking as i live in England and its cold so will they be all right as they are inside atm so there's a big temperature change

