Aquarium Filters

Compare canister filters, HOBs, skimmers and rollmats through specs, prices and the tanks using them.

+ Add custom equipment

Build your setup

Explore by category

Find the gear behind the community's tanks.

All categories →

In community tanks

Chosen by aquarists

Popular equipment · Filter

892 matching items · Most used first

Ozone Resistant Kynar TeeFilter

Ozone Kynar Fittings

Ozone Resistant Kynar Tee

An ozone-resistant Kynar tee fitting for joining three tubes in ozone equipment; Kynar withstands high ozone concentrations where materials like nylon would quickly melt. Available in 3/16, 1/4, 3/8, and 1/2 inch sizes.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Ozone Resistant Kynar YFilter

Ozone Kynar Fittings

Ozone Resistant Kynar Y

The Ozone Resistant Kynar Y is an inexpensive 1/4-inch Y fitting made from ozone-safe Kynar; it is the material of choice for ozone applications, since materials like nylon degrade in high ozone concentrations.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PB1 Carbon Block - 0.5 MicronFilter

Matrikx

PB1 Carbon Block - 0.5 Micron

The Matrikx PB1 Carbon Block (0.5 micron nominal) is a uniform cylindrical activated carbon block for lead, cyst, chlorine taste and odor, and VOC reduction, in 10-inch and 20-inch lengths.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBan Phosphate Adsorption MediaFilter

Two Little Fishies

PhosBan Phosphate Adsorption Media

Two Little Fishies PhosBan is a synthetic ferric oxide hydroxide (GFO) phosphate adsorption media for saltwater and freshwater aquariums that also adsorbs silicate without releasing adsorbed substances. Recommended dosing is 50g per 50 gallons of saltwater (150g treats up to 158 gallons), and it works tumbled in a reactor or in a media bag in high flow, available in 1/3 lb (150g) and 1 lb (454g) sizes.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBan Reactor 150Filter

Two Little Fishies

PhosBan Reactor 150

The Two Little Fishies PhosBan Reactor 150 is an upflow media reactor that pushes water from the bottom through media for even distribution, preventing channeling and gently fluidizing media like GFO. It has a 200-gram max media capacity, 1/2" barb inlet/outlet with an included 1/2" ball valve for flow control (max 250 GPH), a low-profile 14.25"H x 3"W x 4"D body with built-in hanging bracket for hang-on-back or under-tank mounting, and works with activated carbon, GFO, and biopellets; a 100-250 GPH feed pump is required.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBan Reactor 550Filter

Two Little Fishies

PhosBan Reactor 550

Two Little Fishies PhosBan Reactor 550 is designed to push water upwards from the bottom through the media. Includes Phosban 550 body, lid, ratchet clip, 3 soft 90 elbows, 2 sponges, 2 dispersion plates, ball valve, short pipe adapter, and 9 in tube.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBan Reactor Extension KitFilter

Two Little Fishies

PhosBan Reactor Extension Kit

The PhosBan Reactor Extension Kit contains all the parts needed to hang a PhosBan Reactor on the back of an aquarium or on the side of a sump, providing a flexible, space-saving connection for reactor installation.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBan Reactor Foam DisksFilter

Two Little Fishies

PhosBan Reactor Foam Disks

Two Little Fishies PhosBan Reactor Foam Disks are 2-pack replacement sponges that sit above and below the filter media inside PhosBan reactors (models 150 and 550). They hold the media bed in place and prevent fine granules from escaping into the aquarium, for use in freshwater or saltwater systems.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBan Reactor O-RingFilter

Two Little Fishies

PhosBan Reactor O-Ring

This is a replacement round-rubber O-ring for Two Little Fishies PhosBan media reactors, available in two versions: PhosBan Reactor 150 O-Ring (SKU 207117) and PhosBan Reactor 550 O-Ring (SKU 207228). It restores a watertight seal between the reactor body and cap, fixing leaks caused by a worn or damaged O-ring; for saltwater and freshwater use.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhosBond - Phosphate Removal MediaFilter

Seachem

PhosBond - Phosphate Removal Media

Seachem PhosBond is a phosphate and silicate removal media that blends granular ferric oxide (GFO) with aluminum oxide for fast, high-capacity adsorption. Its high porosity and mechanical strength make it suitable for media reactors, canister filters, or media bags; dose 60 mL per 200 L (50 gal) of saltwater or 400 L (100 gal) of freshwater, available in 100 mL, 250 mL, 1 L, and 4 L sizes.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Phosi-Ex (500mL)Filter

Nyos

Phosi-Ex (500mL)

Nyos Phosi-Ex is a high-performance phosphate and silicate adsorber media that prevents unwanted algae growth in saltwater aquariums without altering pH or releasing aluminum or other harmful substances. Use 150–200mL per 125 gallons; this 500mL bottle treats 250–500 gallons at 0.5 mg/L phosphate.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Phosphate MinusFilter

Aquaforest

Phosphate Minus

Aquaforest Phosphate Minus is an efficient adsorbing medium for fluidization filters that reduces phosphate and silicate in marine aquariums, preventing green algae and cyanobacteria; dose 25-100 mL per 100 L and replace every 4 weeks.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Phosphate Remover for Fluval 06 & 07 Series Canister FiltersFilter

Fluval

Phosphate Remover for Fluval 06 & 07 Series Canister Filters

The Fluval Phosphate Remover for 06 & 07 Series Canister Filters is a phosphate resin-infused pad custom-fit for Fluval 06 and 07 series canister filters. The pads perform double duty as mechanical and chemical media, removing and controlling phosphate while trapping floating particles; replace monthly, for freshwater or saltwater use.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Phosphate RxFilter

Blue Life USA

Phosphate Rx

Blue Life USA Phosphate Rx is a pre-mixed lanthanum-chloride liquid that rapidly binds phosphate in saltwater and freshwater aquariums so it can be filtered out, helping control algae and support coral vitality. Dosing is six drops per 10 gallons (lowers ~0.5 ppm phosphate), best added into the protein skimmer or overflow for capture in a fine filter sock; note that tangs and some wrasses can be sensitive to it.

0 showcased tanks

Add to my tank

Sign in to choose your tank

phosphateout 130g filter mediaFilter

EHEIM

phosphateout 130g filter media

EHEIM phosphateout (130 g) is a chemically acting phosphate remover made from a special iron compound for chemical filtration. The iron binds phosphate and removes it from the water circulation, inhibiting algae growth; it is free from harmful substances and suitable for fresh and marine water.

0 showcased tanks

Add to my tank

Sign in to choose your tank

phosphateout 390g filter mediaFilter

EHEIM

phosphateout 390g filter media

EHEIM phosphateout (390 g) is a chemically acting phosphate remover made from a special iron compound for chemical filtration. The iron binds phosphate and removes it from the water circulation, inhibiting algae growth; it is free from harmful substances and suitable for fresh and marine water.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PhytoTank Macroalgae Chaeto ReactorFilter

Poseidon Reef Systems

PhytoTank Macroalgae Chaeto Reactor

The Poseidon Reef Systems PhytoTank Macroalgae Chaeto Reactor (12 in tall, 6 in diameter, 3.5 L) is a natural way to remove phosphate and nitrate by growing chaeto, fed by a small pump (under 250 GPH) with 1/2-inch ID hose barbs, includes LED lighting system.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Poly Filter Aquarium FilterFilter

Poly-Bio-Marine Inc

Poly Filter Aquarium Filter

The Poly-Bio-Marine POLY-FILTER is a chemical filter pad for fresh and saltwater aquariums that absorbs contaminants, medications, ammonia, and heavy metals. It changes color to indicate which substances it has removed and is available in 4x8 and 12x12 inch sizes.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Poly-Bio-Marine Inc - Poly Filter Aquarium Filter 4 x 8Filter

Poly-Bio-Marine Inc

Poly-Bio-Marine Inc - Poly Filter Aquarium Filter 4 x 8

Poly-Bio-Marine Poly Filter (4 x 8) is a special patented filter pad material bonded to a synthetic matrix for filtering and purifying both fresh and saltwater aquariums. It absorbs/adsorbs contaminants and toxic materials (including medications after they serve their purpose), is non-toxic and harmless to biological filtration, removes excess ammonia while the biofilter readjusts, and changes color when exhausted.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Poseidon 200 Ozone Generator - Black EditionFilter

Ozotech

Poseidon 200 Ozone Generator - Black Edition

The Ozotech Poseidon 200 Ozone Generator (Black Edition) produces a variable output of up to 200 mg/hr of ozone using patented Cold Spark Corona Discharge in a rugged aluminum, wall-mountable enclosure. Ozone oxidizes waste, yellowing pigments, and coral defensive toxins for clearer water, better light penetration, healthier corals, and increased skimmer efficiency; it should be used with an ORP controller and carbon on both air and water outputs.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Pre Filter SpongeFilter

Not specified

Pre Filter Sponge

A Pre Filter Sponge is the perfect tool to keep shrimp, small fish, and babies safe from being sucked up into the filter. The sponge should be placed over the intake tube, making sure that the fit is snug and secure. Acting as a mechanical filter, the sponge will trap larger particles, while allowing water and smaller particles to pass into the filter. Regular cleaning with tank water is recommended to prevent blockage and protect beneficial bacteria. Available in Small, Medium, and Large sizes.

0 showcased tanks

Add to my tank

Sign in to choose your tank

Prefilter for Canisters filtersFilter

EHEIM

Prefilter for Canisters filters

The EHEIM Prefilter is an extra prefilter that traps the majority of coarse dirt particles before the water reaches the external filter. Water is drawn in all round over a wide surface area through two modular filter baskets with filter cartridges that are easily cleaned and replaced; it fixes with a telescopic pipe in place of the intake pipe and fits all EHEIM external filters (apart from professionel 3e and classic 1500XL).

0 showcased tanks

Add to my tank

Sign in to choose your tank

Pre-Packed Bulk Deionization Resin (Color Changing)Filter

Bulk Reef Supply

Pre-Packed Bulk Deionization Resin (Color Changing)

BRS Pre-Packed Bulk Deionization Resin (Color Changing) is the last stage of an RO/DI system, polishing RO water to zero TDS. The color changing resin physically changes colors as it gets exhausted, removing the guesswork of when to replace it. Available in one-cartridge refill or 1.5 gallon vacuum-sealed packaging to preserve quality; refillable cartridges let you skip expensive proprietary sealed cartridges.

0 showcased tanks

Add to my tank

Sign in to choose your tank

PRESS7000 pond filter with CLEARUVC9WFilter

EHEIM

PRESS7000 pond filter with CLEARUVC9W

The EHEIM PRESS7000 is a complete ready-to-install pond pressure filter set with CLEARUVC 9W clarifier, for ponds up to 7,000 litres. Its revolutionary backwash technology cleans the filter without opening it by simply turning the lever in the lid so water flows in reverse; the set includes the FLOW2500 energy-saving pump, a CLEARUVC 9W clarifier, 5 m spiral hose, and original EHEIM filter media.

0 showcased tanks

Add to my tank

Sign in to choose your tank