Where could one find reviews on fish tank filters?

An online store titled "MarineDepot" has reviews of different types of filters for sale. Another Excellent place to check out is a website called "Aquarium Filter Reviews." They have reviews for hang-on type filters, canister filters, sponge filters, specialized custom-made filters and wet/dry made filters as well. Also, websites such as Amazon will have reviews of a particular type of aquarium filter you may be interested in purchasing if you shop there.