This depends on the kind of fish, if it is a tropical fish, warm water is better. Hot water is not a good idea to use because I am pretty sure it can kill the fish. Most of the time you should use cold water....
Fish are cold blooded. So theirtemperatureis due to their surroundingtemperature. So if the water is hot their body temperature is hot. Fish doesn't have lungs. They have gill instead. They drink water with their mouth and keep the oxygen in the water and let out the water with it's gills.
You need to keep a betta in warm water with a temperate of 75-85 degrees. If you keep it in cold water it will eventually get sick and die
i don't now
it will probably die :-(
Metalic cups keeps the water cold and it can be also used to keep the water hot .
No, if they are cold water it will probably kill the fish but hot water, maybe
warm it up every time it gets cold
fish do not die in filtered water instead they will de if there is no filtered water try ussing one of the fluval brands for the size of your tank. maybe you did not cycle the tank before you add fish. how big is your tank and what fish o you keep?
No, but if the water gets too cold you might suggest heating it up, but not too hot because most goldfish don't liike hot water.
They Keep out cold and keep in hot or keep in cold and keep out hot it depends on the weather
to keep hot water from backing up into the cold water piping.
take the ripcrd and keep it in hot water for 2-3 minutes and then take it out it would be soft and keep it in cold water and straighten it with ur hands. first straighten it and then keep it in cold water