My dad has some goldfish that are reasonably old that live in a 125litre tank, he has 4 of them and they are all around 10 years old 2 of them lost their colours ages ago and went to a very light orange colour almost silver rather than orange and now the other 2 are starting to go the same way is there anything i can do to stop them losing their colours? and is it something that i have done? in the past i have added king british, safe guard and green algea control as instructed by the shop keeper who sold me the fish. advice or an answer would be much appreciated
Thanks
Thanks