Normally you don't really need to clean the filter unless the flow is too low. If this is the case, you will want to rinse any filter media in a clean bucket of old tank water. Do not rinse filter media in tap water as this will kill off all your good bacteria for your tank.
4 days each like every 4 days you clean the bowl does not matter if its cold water fish or warm
Make sure that the filter bag that is in your filter is clean. The cause can also b too many fish or over feeding.
A carbon filter is a good idea in any fish tank as it helps to keep the water oxygenated for the fish. You can get one at any pet store which sells aquarium supplies. An example of a store that may be found in many cities is Tisol. They generally carry a good supply of all aquarium products including carbon filters.
Mickey mouse fish are very clean
27 days
A fish can die due to not having clean water
depends on the fish.
about 5 to 7 days.
YOu can purchase a filter for the tank. Also you might have too many fish in your tank. But every twwo weeks is not very often, most people change theirs once a week.
around 2 days..
90 days
once every three weeks