Aqua Dreams Simplicity filter sock holder
Available in 2 Sizes, small for 4" ring filter sock, and Lg for 7" ring filter sock.
Add a sock holder to an existing sump or turn a standard aquarium into a sump, just add one sock holder for each drain. Socks sold separately.
Made from sturdy black acrylic, with 3- nylon rust-proof screws to anchor the sock holder firmly in place.