Bubble Magus Filter Sock Holder - 4 inch Aqua Ultraviolet Shake well before use

Shake well before use

The aquarium must be drilled to install this overflow

It is used during pump maintenance to replace worn tubing and help maintain stable flow for calcium reactor feed

and spacers before final placement

Bubble Magus Filter Sock Holder - 4 inch Aqua Ultraviolet Shake well before useBubble Magus Filter Sock Holder 4 inch Bubble Magus Filter Sock Holder 4 inch is an acrylic sump mounted holder for standard 4 inch aquarium filter socks. It gives freshwater, saltwater, and reef aquariums a simple way to add mechanical filtration when a sump does not already have a built in sock chamber. Bubble Magus 4 Inch Filter Sock Holder for Aquarium Sumps This holder is designed to hang on compatible sump walls and hold a 4 inch filter sock