There is a debate on whether or not a filter is needed in a Betta tank. For larger tanks, especially those with other fish or live plants we recommend using a filter. If you have a very small tank then you don't really need a filter for it. Canister filters are becoming increasingly popular and this article will help you find the perfect one for your tank. Why Should I Have … [Read more...] about Choosing the Right Canister Filter for Your Betta Fish Tank