Hi, I recently purchased a new 15 gal tank for my goldfish and 2 weather loaches which I have kept in a smaller tank for years with no problems. The pet store employee told me to run my filter for a couple of days and then add the fish which I now realize was a HUGE mistake as it had not had chance to cycle. I did however add the ornaments from the old tank and wash the gravel out with the old water. The fish seemed normal for about a week until I noticed that my weather loaches were showing signs of fin rot. I put treatment in the tank but sadly I lost them both. I have now noticed that although my goldfish is swimming and eating normally, his fins have red streaks and white bumps on them which I believe to be signs of amonia posioning? I went back to the pet store today to get the water tested and was told that the amonia and nitrate levels are "so high that it is a miracle that the goldfish is still alive" and that to fix the problem I should do 25% water changes every 2 days until the problem is fixed. I've been reading up on this and found contrasting information as some people say that in an emergency I need to do large water changes daily and some people say not to change the water as it will remove the bacteria needed for the cycle so I'm very confused.
My question is, how do I reduce these levels and how often/what percentage of water changes should I do? I've had my goldfish for almost 6 years and I would be very sad if I lost him I feel terrible for not doing a fishless cycle in the first place but whats done is done Please help, I know that I need to act quick to save my surviving fish, although luckily he does seem to be quite tough. Thank you.
My question is, how do I reduce these levels and how often/what percentage of water changes should I do? I've had my goldfish for almost 6 years and I would be very sad if I lost him I feel terrible for not doing a fishless cycle in the first place but whats done is done Please help, I know that I need to act quick to save my surviving fish, although luckily he does seem to be quite tough. Thank you.