If you don't want to change water again and again then you can use filter. But if you can change water every week then you don't need a filter. If you are put fish in your Medaka pond then I will recommend you to use filter. Because it will keep your fish healthy. I am also using filter for my Medaka pond which I have bought with the help of this website. Now, I don't have to change my water. I have put Japanese rice fishes in my Medaka pond and they are all healthy and it is because of the filter. I would also like to help you by sharing DGCustomerFirst.Com website and by doing that website survey you can win money.
