hmm OH has decided to cheer me up and has come home with 2 new babies, i came in to find 5 little goldies swimming round in my tank, instead of the 3 i had, well ive swapped my weather loaches into the other cold water tank, so now its just the 5 goldies in the 50 gallon, there is 1 red cap oranda, 1 orange and white fantail, and 3 calico fantails,all around 3 inches long. will they be ok if i start to do twice weekly 50% water changes instead of the 1? im hoping to find a bigger tank sooner rather than later but we are in no way able to buy one even 2nd hand for quite some time yet.