Eshopps 4 inch x 300 Micron Filter Sock Category_Coral Nutrition Easy feed top cover opening

Easy feed top cover opening

Trapped air auto-evacuated every 12 hours to ensure maximum efficiency

Includes an accurate titration test for KH and a colorimetric test for pH for monitoring these essential parameters in Marine Fish aquariums

Fluval FX4 Canister Filter (A214)

Eshopps 4 inch x 300 Micron Filter Sock Category_Coral Nutrition Easy feed top cover openingFilter socks stay hidden out of the way in the sump, but they are a boon for clear aquarium water. Micron filter bags provide excellent mechanical filtration, which helps reduce the amount of ammonia producing organic matter in your aquarium. They also help prevent larger objects such as sand, crabs, and snails from damaging pump motors. Add these Eshopps filter socks effortlessly to any existing sump. Choose from Round or Rectangular Bags;