what does filter sock do?
<answer> Filter socks are a great way of helping us filter our aquarium water, but without the proper care and regular maintenance, they can have an adverse effect on your aquarium. <context> Filter socks are a great way of helping us filter our aquarium water, but without the proper care and regular maintenance, they can have an adverse effect on your aquarium. With a few simple steps you can extend the life of these invaluable reef keeping tools and save a few bucks along the way.