i have a round fish tank and it fits about 10 - 12 litres in it and i also have 4 small goldfish (all different types).. anyway so yesterday i got them and brought them home and put them in a tank with the water the guy gave me but it was dirty. so i let them get used to the tank for a day and then today i did a total new water change. i cleaned everything (not with soap) and i put the chemicals that are needed into the water (a little more but its ok because it says to put more in if you the tails to do something but i only put in touch more and not even enough more to do the tails thing.)
anyway i just moved them back in the tank (it was room temp) and my fish are breathing very fast...
why are they doing this?
will they calm down?
how can i help?