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Ista Replacement Hang On Cartridges Pack of 3 Ista Replacement Hang On Cartridges Pack of 3
Street Price: $12.95
Our Price: $2.20
55 in stock!
Starpet Small Charcoal Bamboo Rings Carbon Media 800ml - Filtration Starpet Small Charcoal Bamboo Rings Carbon Media 800ml - Filtration
Street Price: $9.90
Our Price: $3.00
45 in stock!
(1)
Aquananos Replacement Cartridge - Single Pack Aquananos Replacement Cartridge - Single Pack
Street Price: $3.30
Our Price: $3.30
32 in stock!
Bakki Rods (Bacteria House Bio Rods) Full Version Bakki Rods (Bacteria House Bio Rods) Full Version
Street Price: $6.50
Our Price: $4.95
91 in stock!
(2)
AquaClear 20 Replacement Foam Sponge Block AquaClear 20 Replacement Foam Sponge Block
Street Price: $6.95
Our Price: $4.95
2 in stock!
(2)
Serenity Small Sponge Filter SMXY-180 - Ideal for tanks up to 100l Serenity Small Sponge Filter SMXY-180 - Ideal for tanks up to 100l
Street Price: $7.70
Our Price: $4.95
38 in stock!
(6)
Serenity Nano Sponge Filter SMXY-2835 - Ideal for tanks up to 40l Serenity Nano Sponge Filter SMXY-2835 - Ideal for tanks up to 40l
Street Price: $5.95
Our Price: $4.95
6 in stock!
(3)
Serenity Oxygen Block 20g Serenity Oxygen Block 20g
Street Price: $4.95
Our Price: $4.95
7 in stock!
Single Sponge Intake Filter XY-2830 Single Sponge Intake Filter XY-2830
Street Price: $8.95
Our Price: $5.50
(Out of Stock)
Single Large Sponge Intake Filter XY-001 Single Large Sponge Intake Filter XY-001
Street Price: $8.95
Our Price: $5.50
8 in stock!
Bakki Rods Square Single Unit (Bacteria House Bio Rods) Bakki Rods Square Single Unit (Bacteria House Bio Rods)
Street Price: $6.60
Our Price: $5.50
35 in stock!
Bakki Rods Spiral Single Unit (Bacteria House Bio Rods) Bakki Rods Spiral Single Unit (Bacteria House Bio Rods)
Street Price: $6.60
Our Price: $5.50
36 in stock!
Bakki Rods (Bacteria House Bio Rods) Bakki Rods Brown (Bacteria House Bio Rods) Full Version
Street Price: $6.60
Our Price: $5.50
87 in stock!
Ista 19mm Hose 3/4" Non Return Check Valve Ista 19mm Hose 3/4" Non Return Check Valve
Street Price: $17.94
Our Price: $5.50
63 in stock!
(1)
Aqua One Grey Transparent Hose 12/16mm Purchase by the Meter Aqua One Grey Transparent Hose 12/16mm Purchase by the Meter
Street Price: $5.50
Our Price: $5.50
25 in stock!
Filtration Bag for Resins and Carbon Resin Media Filtration Bag for Resin Media
Street Price: $6.95
Our Price: $5.94
61 in stock!
(36)
AquaClear 20 Replacement Activated Carbon Insert AquaClear 20 Replacement Activated Carbon Insert
Street Price: $6.95
Our Price: $5.95
5 in stock!
(2)
Serenity Medium Sponge Filter SMXY-280 - Ideal for tanks up to 150l Serenity Medium Sponge Filter SMXY-280 - Ideal for tanks up to 150l
Street Price: $8.80
Our Price: $5.95
53 in stock!
(2)
AquaClear 50 Replacement Ammo Rid 170g Ammonia AquaClear 50 Replacement Ammo Rid 170g Ammonia
Street Price: $7.70
Our Price: $6.49
7 in stock!
(1)
Aqua One Grey Transparent Hose 16/22mm Purchase by the Meter Aqua One Grey Transparent Hose 16/22mm Purchase by the Meter
Street Price: $9.90
Our Price: $6.60
(Out of Stock)
Aqua One Grey Transparent Hose 25/32mm Purchase by the Meter Aqua One Grey Transparent Hose 25/32mm Purchase by the Meter
Street Price: $16.50
Our Price: $6.60
12 in stock!
Bacteria House Premium Lotus Bio Rods Full Version Bacteria House Premium Lotus Bio Rods Full Version
Street Price: $9.90
Our Price: $6.94
20 in stock!
AquaClear 20 Replacement Bio Max Media Insert AquaClear 20 Replacement Bio Max Media Insert
Street Price: $6.95
Our Price: $6.95
3 in stock!
(1)
Serenity Large Sponge Filter SMXY-380 Serenity Large Sponge Filter SMXY-380
Street Price: $6.95
Our Price: $6.95
116 in stock!
(7)
AquaClear 30 Replacement Bio Max Media Insert AquaClear 30 Replacement Bio Max Media Insert
Street Price: $7.95
Our Price: $7.49
2 in stock!
Pet Worx Bio Balls 50 - 32mm Pet Worx Bio Balls 50 - 32mm
Street Price: $11.00
Our Price: $7.50
(Out of Stock)
Fluval U3 Internal Filter Replacement Foam Sponge 2 Pack Fluval U3 Internal Filter Replacement Foam Sponge 2 Pack
Street Price: $8.95
Our Price: $7.50
2 in stock!
Boyd Enterprises Single Chemi-Bag 9cmx19cm Boyd Enterprises Single Chemi-Bag 9cmx19cm
Street Price: $7.95
Our Price: $7.50
13 in stock!
(2)
Fluval FX5/FX6 Giant Rubber Suction Cups (4) Fluval FX5/FX6 Giant Rubber Suction Cups (4)
Street Price: $7.50
Our Price: $7.50
(Out of Stock)
AquaClear 50 Replacement Activated Carbon Insert AquaClear 50 Replacement Activated Carbon Insert
Street Price: $7.94
Our Price: $7.94
4 in stock!
(1)
Aquarium Filter Poly Pads 40g Poly Pads 40g Filter Wool Media
Street Price: $9.90
Our Price: $7.95
8 in stock!
(12)
Sera Media Filter Bag 15cm x 25cm Sera Filter Media Bag (15 X 25cm)
Street Price: $9.90
Our Price: $7.95
(Out of Stock)
(2)
Dual Sponge Intake Filter Dual Sponge Intake Filter
Street Price: $10.95
Our Price: $7.95
18 in stock!
(1)
AquaClear 70 Replacement Foam Sponge Block AquaClear 70 Replacement Foam Sponge Block
Street Price: $8.95
Our Price: $7.95
1 in stock!
(1)
Eheim Pro 1 Sealing Rings Set for Double Tap Unit Eheim Pro 1 Sealing Rings Set 2226-2228 for Double Tap Unit
Street Price: $9.90
Our Price: $7.95
2 in stock!
Seachem DeNitrate 250ml Media Biological Seachem DeNitrate 250ml Media Biological
Street Price: $9.86
Our Price: $8.36
5 in stock!
Eheim Hose 12/16mm Purchase by the Meter Eheim Hose 12/16mm Purchase by the Meter
Street Price: $8.94
Our Price: $8.94
13 in stock!
(1)
White Prefilter Bag - Sock - 150 Micron - 4 Inch White Prefilter Bag - Sock - 150 Micron - 4 Inch
Street Price: $8.94
Our Price: $8.94
(Out of Stock)
Eheim Classic Spring Clips for 2213, 2215, 2217 Eheim Classic Spring Clips for 2213, 2215, 2217
Street Price: $11.00
Our Price: $9.45
5 in stock!
(1)
   
 

Fish Tank Filters

An aquarium filter or fish tank filter is required for keeping your aquarium clean with mechanical filtration and sponges which remove unsightly solid waste. By letting you go longer between replacing your fish tank’s water, the standard water filter in most aquariums prevents your fish from experiencing any sort of stress or shock from a being in a different aquatic environment.

The Tech Den has everything you need to make sure that filtering your tank is easy as possible. Choose from our range of quality brand name tank filters or keep your current one running in top shape with our replacement aquarium filters, media, sponges, and spare parts. If you already have an aquarium filter, our filter media upgrades help to maintain and improve your filter.

Aquarium filter media are an easy to use and replace and are a valuable addition to your aquarium. Replaced periodically, biological filter media help with housing your tank’s good bacteria and reduce the toxicity of your water. As you can see, The Tech Den has the expertise and product selection to make sure that you are using the filter solution that works best for you and your fish. After all, picking the right filter is not only good for your fish, it generally means less cleaning and maintenance for you. Feel free to contact us with any questions about what filtering solution would work best for you!