Kent Marine Reef Carbon Super Activated Carbon (450 gr.)
Reef Carbon removes organic pollutants, stain, and entrained toxic gases in marine and freshwater aquariums. Contains the finest pelletized activated bituminous coal based carbon. Pore size in the 20 to 20,000 angstrom range, ideally suited to removal of large organics. Super activated with very high iodine and molasses numbers. Less than 0.2% ash making it suitable for sensitive species such as discus. Will not leach phosphates or promote undesirable algae growth, suited to sensitive reef systems. Engineered for water flow, will not clog easily like small granular carbons. Outperforms any carbon--especially coconut shell.

Lee's Disposable Carbon Cartridges 2-pack ()
Two-pack of carbon cartridges for Lee's Premium, Original, and Economy Undergravel Filters keep your tank sparkling clean.

Penn Plax Cascade Canister Filter Bio-Sponge (For Cascade 500)
Convenient, no fuss replacement sponge for your Cascade Canister Filter optimizes colonization of beneficial aerobic bacteria and removes ammonia and nitrites.Custom cut to fit your Cascade 500 Canister Filter.

Petcetera Filter Fiber (4 oz.)
100% polyester filter fiber for use with all aquarium filters. Effectively traps dirt and debris.

Petcetera Filter Lifeguard Bag for Medium to Large Filters (4" X 12"; For Medium To Large Filters)
Protect your filters from damage caused by loose filter media with 100% nylon drawstring bag that holds filter media in any filter. Can be filled with all types of carbon or granular media. Specially designed nylon material that maximizes filtration and will not disintegrate in water.Washable and reusable.For fresh and saltwater aquariums.

Rainbow Lifegard Replacement Media for Fluidized Bed Filters (3 lbs.)
Improves filtration in any make or model fluidized bed filter.Angular shape provides higher surface area compared to round.High surface area--features 71 sq. ft. per lb. of available surface area for bacterial growth. This package provides 214 sq. ft.Self cleaning function from sand grains colliding with greater frequency. This bumping knocks debris off sand grains providing new areas for bacterial growth to occur.This special mixture of sand is easily fluidized even with small energy efficient pumps.For use in fresh or saltwater aquariums.

Rite-Size Bonded Filter Sleeve Three-Pack for HOT Magnum ()
The perfect pre-filter for HOT Magnum media container and micron cartridge. Each Rite-Size Foam Sleeve is specially designed to prolong the life of filter media by reducing the accumulation of waste and dirt particles which can prematurely clog a filter. Fine mesh foam traps and holds dirt particles while the sleeve's open-cell construction promotes water flow--without impairing overall filter performance. For best results, rinse or replace monthly.

Rite-Size Bonded Filter Sleeve Three-Pack for Penguin 160/170 & 300/330 ()
Each preassembled Rite-Size Cartridge filters water through a double thick polyfiber pad which traps more dirt and debris, faster. The cartridge is packed with super-efficient pure Magnum Activated Carbon--it keeps working longer after most carbons stop. It's better than a bag! Just shake and rinse. The patented ribbed backing evenly distributes carbon for maximum water-to-carbon contact. No bypass, no "tea bag" effect--just crystal clear, crystal clean water.

Second Nature Trickle Sponge for Wet/Dry Power Filter 3000 & 4000 ()
Hollow spaces in this open-cell sponge allow huge amounts of oxygen laden water to trickle through. This stimulates a massive growth of aerobic bacteria which super-purifies your aquarium water, naturally.