When fish are imported, there is always danger of an epidemic, but safeguard against this by quarantining the new fish for days putting them into your stock aquarium. This is where your spare tank comes in .
New arrivals which you suspect should be put into a separate aquarium containing a of permanganate of potash to strength of 1/8 grain per gallon of water, and suspect white spot raise the temperature to 85° F. Fish obtained from sources to be healthy not be subjected to quarantine.
Never put new arrivals directly into their new , but float the container in your aquarium water until the temperatures are the , then tip them in. I advise you to do this some tropical have a large temperature range, sudden changes are liable to disorders.