I just got a new filter, but I don't know how often you should change the water with the filter....How often do you have to change your betta fish tank if you have a filter?Less often than you need to if you don't have a filter.
Once the tank cycles (the filter grows some bacteria) then the filter will process the waste ammonia into less harmful Nitrate, so the water will stay safe for fish a lot longer. How much do you need to change? Depends on how many fish are in the tank. For a 5gal, 20% per week would be plenty for a single betta. Smaller tank, change more, bigger tank, you can change less. Remember the same amount of waste is going into the tank whether it's 2.5 gal or 20 gal. So in a 2.5 you might change 50% per week, in a 20gal, 10% would be plenty.
You cant really change too much water, if you do, all that happens is the water stays cleaner, this is not a bad thing.
IanHow often do you have to change your betta fish tank if you have a filter?Do about a 10% water change every week. Not too much.
Good luck!
MirandaHow often do you have to change your betta fish tank if you have a filter?once a week about 20 percent and don't change your filter cartridge until it is falling apart ... it is suggested to change often but that is where much of the beneficial bacteria is so it is good to just rinse once a week in the siphoned off tank water ...How often do you have to change your betta fish tank if you have a filter?Do 15% water change weekly and replace or rinse with tank water the filter every month.How often do you have to change your betta fish tank if you have a filter?Assuming you have a 5+ gallon heated and filtered aquarium do a 25% water change weekly.
