fluval 204 filter

[Shane Tesser]

It doesnt work as good...it just moves the same amount of water, big deal, the whole idea with canister filters are that you can fill them with more stuff...ie peat, ammonia remover, carbon...etc etc...it has a larger surface area of active ingredients to remove stuff....aqua clear does not....they are effective, but no where near that of a canister type filter.