Celsius is a temperature scale where 0 C indicates the melting point of ice and 100 C indicates the steam point of water.Yup, it's the melting point of ice, not the freezing point of water.elsius is a temperature scale where 0 C indicates the melting point of ice and 100 C indicates the steam point of water.
Biological filters: Replace the carbon when the aquarium water turns cloudy, or at least once every two months. Chemical filters: Give the chemical filter a good cleaning out when it appears to be clogged, malfunctioning or working very slowly. More frequent cleanings may be needed if your fish is sick.
Unless you mean how to you change the sand in a sand filter. This is done by removing the multi port control fr â¦ om the top of the unit sucking out the sand with a venture made for the occasion (ask your pool shop) and replacing the sand. This needs to be done about every 3 to 5 years.