Aquarium Filter Sock with Holder | 4 Inches Accessories All of these elements need

All of these elements need to be available in balanced proportions for coral health and growth

to treat open wounds and tissue damaged by handling and netting

--Axle cores and casings

as well as fishes fed with live food

Internal or External Application

Aquarium Filter Sock with Holder | 4 Inches Accessories All of these elements needDIY hang on filter socks holder fits standard 4"filter sock, to remove excess food, detritus, organic waste, dust, any particles and results in crystal clear water. Specifications: Dimensions 4. 2" x 6. 5" x 1. 9" Max Rim Thickness 6mm Filter Sock Opening 3. 6" Diameter What's Included? 1x Filter Sock Holder 1x 200 micron Filter Sock 2x Screws