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$12.19
Fluval Biomax Biological Material Remover, 500 G - Biological Filter Media For Aquariums
Amazon.com
7K+
$12.19
Fluval Biomax Biological Material Remover, 500 G - Biological Filter Media For Aquariums
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$463.99
Aquascape 95054 Ultraklean 3500 Biological Pressure Filter With 28 Watt UV Clarifier Sterilizer, 5,200 GPH,Black
Amazon.com
455
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Aquascape 95054 Ultraklean 3500 Biological Pressure Filter With 28 Watt UV Clarifier Sterilizer, 5,200 GPH,Black
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Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal
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694
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Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal
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CNZ CPF-250 Pressure Bio Filter With 13W Clarifier Black
Amazon.com
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CNZ CPF-250 Pressure Bio Filter With 13W Clarifier Black
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Fluval FX6 High Performance Aquarium Filter, Canister Filter For Aquariums Up To 400 Gal.
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Fluval FX6 High Performance Aquarium Filter, Canister Filter For Aquariums Up To 400 Gal.
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$19.97
Marineland Penguin Bio-Wheel Replacement Filter Cartridges, Rite-Size C, 6 Count
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24K+
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Marineland Penguin Bio-Wheel Replacement Filter Cartridges, Rite-Size C, 6 Count
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$52.99
Fluval 50 Power Filter - Aquarium Filter For 20 To 50 Gallon Fish Tanks - Quiet Energy Efficient Pump - Mechanical, Chemical & Biological Filtration -
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Fluval 50 Power Filter - Aquarium Filter For 20 To 50 Gallon Fish Tanks - Quiet Energy Efficient Pump - Mechanical, Chemical & Biological Filtration -
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$149.99
VIVOHOME Pressurized Biological Pond Filter, 1840GPH Suitable For Koi Ponds Up To 1000 Gallons Or Ornamental Ponds Up To 2100 Gallons
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$149.99
VIVOHOME Pressurized Biological Pond Filter, 1840GPH Suitable For Koi Ponds Up To 1000 Gallons Or Ornamental Ponds Up To 2100 Gallons
Amazon.com
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$17.77
Brightwell Aquatics Microbacter7 Complete Bioculture For Fish Tank Or Aquarium - Populates Biological Filter Media For Saltwater And Freshwater Fish -
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Brightwell Aquatics Microbacter7 Complete Bioculture For Fish Tank Or Aquarium - Populates Biological Filter Media For Saltwater And Freshwater Fish -
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$221.99
$244.50
Fish Mate Powerclenz Bio Filter, 1500 GPH
Chewy.com
$221.99
$244.50
Fish Mate Powerclenz Bio Filter, 1500 GPH
Chewy.com
$36.89
$56.19
Marineland Bio-Wheel Penguin Aquarium Power Filter, 50-Gal
Chewy.com
694
34% off
$36.89
$56.19
Marineland Bio-Wheel Penguin Aquarium Power Filter, 50-Gal
Chewy.com
694
$51.17
Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal & Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 Count
Chewy.com
35
$51.17
Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal & Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 Count
Chewy.com
35
$189.99
Fluval 307 Perfomance Canister Filter - For Aquariums Up To 70 Gallons - Aquarium Canister Filter
Amazon.com
9K+
Free shipping
$189.99
Fluval 307 Perfomance Canister Filter - For Aquariums Up To 70 Gallons - Aquarium Canister Filter
Amazon.com
9K+
$16.99
$18.99
Trdzi Biowheel Aquarium Filters Compatible With Marineland 350 200 Fish Tank, Assembly Hang On Filters Cartridge Replacement Part For Bio-Wheel 200B
Amazon.com
10% off
$16.99
$18.99
Trdzi Biowheel Aquarium Filters Compatible With Marineland 350 200 Fish Tank, Assembly Hang On Filters Cartridge Replacement Part For Bio-Wheel 200B
Amazon.com
$17.99
Cunina Large Aquarium Filter Cartridges Compatible With Tetra Whisper Bio Bag For Aquariums, Fish Tank Filter Large Fit For Tetra Whisper Filter 20I
Amazon.com
158
$17.99
Cunina Large Aquarium Filter Cartridges Compatible With Tetra Whisper Bio Bag For Aquariums, Fish Tank Filter Large Fit For Tetra Whisper Filter 20I
Amazon.com
158
$15.99
Marineland PRBW150B 150B Bio Wheel Assembly Penguin Filter Parts For Aquarium
Amazon.com
1K+
$15.99
Marineland PRBW150B 150B Bio Wheel Assembly Penguin Filter Parts For Aquarium
Amazon.com
1K+
$94.72
Marineland Penguin PRO Power Filter
Amazon.com
2K+
Free shipping
$94.72
Marineland Penguin PRO Power Filter
Amazon.com
2K+
$279.99
Tetrapond Bio-Active Pressure Filter, For Ponds Up To 4000 Gallons
Amazon.com
303
Free shipping
$279.99
Tetrapond Bio-Active Pressure Filter, For Ponds Up To 4000 Gallons
Amazon.com
303
$98.20
Aquatic Life Twist-In 4-Stage RO/DI Aquarium Water Filter System - Reverse Osmosis Filtration With Sediment, Carbon, Membrane & DI Resin - 75 GPD
Amazon.com
985
Free shipping
$98.20
Aquatic Life Twist-In 4-Stage RO/DI Aquarium Water Filter System - Reverse Osmosis Filtration With Sediment, Carbon, Membrane & DI Resin - 75 GPD
Amazon.com
985
$17.99
Cunina 8PCS Medium Filter Cartridges Compatible With Tetra Whisper Bio-Bag Filter Cartridges Medium For Aquariums 10I IQ10 PF10, Fish Tank Filter
Amazon.com
2
$17.99
Cunina 8PCS Medium Filter Cartridges Compatible With Tetra Whisper Bio-Bag Filter Cartridges Medium For Aquariums 10I IQ10 PF10, Fish Tank Filter
Amazon.com
2
$89.80
2" Thick Biological Filter Material - Green - 28" X 4'
123 Ponds
$89.80
2" Thick Biological Filter Material - Green - 28" X 4'
123 Ponds
$9.29
$13.39
Marineland Bio Wheel Assembly Fish Aquarium Filter
Chewy.com
145
30% off
$9.29
$13.39
Marineland Bio Wheel Assembly Fish Aquarium Filter
Chewy.com
145
$12.69
Ipetboom Aquarium Crushed Coral Filter For Fish Tank Freshwater Ph, 500G Bio Ceramic Media Filtration Material Pond - Reusable Aquarium Landscape
Amazon.com
104
$12.69
Ipetboom Aquarium Crushed Coral Filter For Fish Tank Freshwater Ph, 500G Bio Ceramic Media Filtration Material Pond - Reusable Aquarium Landscape
Amazon.com
104
$249.99
Penn-Plax Cascade 1500 Canister Filter - 350 GPH Aquarium Filter For Tanks Up To 200 Gallons - 360 Degree Flow Valves, Poly Fiber Pads, Bio-Sponge &
Amazon.com
10K+
Free shipping
$249.99
Penn-Plax Cascade 1500 Canister Filter - 350 GPH Aquarium Filter For Tanks Up To 200 Gallons - 360 Degree Flow Valves, Poly Fiber Pads, Bio-Sponge &
Amazon.com
10K+
$71.94
Aquaclear 70 Power Filter, Fish Tank Filter For 40- To 70-Gallon Aquariums, Black
Amazon.com
88
Free shipping
$71.94
Aquaclear 70 Power Filter, Fish Tank Filter For 40- To 70-Gallon Aquariums, Black
Amazon.com
88
$74.99
$79.99
Marineland Emperor Bio-Wheel Replacement Power Filter Cartridges
Amazon.com
4K+
Free shipping
$74.99
$79.99
Marineland Emperor Bio-Wheel Replacement Power Filter Cartridges
Amazon.com
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$14.54
$17.99
Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239
Amazon.com
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Fluval FX4/FX5/FX6 Bio-Foam, Replacement Aquarium Filter Media, 2-Pack, A239
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$36.54
$47.59
Marineland Bio-Wheel Penguin Aquarium Power Filter, 30-Gal
Chewy.com
687
23% off
$36.54
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Marineland Bio-Wheel Penguin Aquarium Power Filter, 30-Gal
Chewy.com
687
$26.12
$32.79
Tetra Whisper Internal Aquarium Power Filter With Bioscrubber, 10-30 Gal
Chewy.com
578
20% off
$26.12
$32.79
Tetra Whisper Internal Aquarium Power Filter With Bioscrubber, 10-30 Gal
Chewy.com
578
$5.79
$9.49
Marineland Rite-Size S, T & X, Fit All C-Series, Magniflow Biological Aquarium Filtration Ceramic Filter Rings, 140 Count
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55
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Marineland Rite-Size S, T & X, Fit All C-Series, Magniflow Biological Aquarium Filtration Ceramic Filter Rings, 140 Count
Chewy.com
55
$25.99
CNZ Media Filter Bags Activated Carbon Charcoal Aquarium Fish Tank Pond Canister Filter, 4 Lb., Black (CNZ_C4PK)
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378
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CNZ Media Filter Bags Activated Carbon Charcoal Aquarium Fish Tank Pond Canister Filter, 4 Lb., Black (CNZ_C4PK)
Amazon.com
378
$19.99
Cunina 12PCS Medium Filter Cartridges Compatible With Tetra Whisper Bio-Bag Filter Cartridges Medium For 10I IQ10 PF10, Fish Tank Aquarium Filter
Amazon.com
$19.99
Cunina 12PCS Medium Filter Cartridges Compatible With Tetra Whisper Bio-Bag Filter Cartridges Medium For 10I IQ10 PF10, Fish Tank Aquarium Filter
Amazon.com
$24.99
Tetra Whisper ATS26170 Assembled Biobag Filter Cartridges, Large 6 Count
Amazon.com
917
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Tetra Whisper ATS26170 Assembled Biobag Filter Cartridges, Large 6 Count
Amazon.com
917
$2.47
$14.99
Penn-Plax Cascade Aquarium Bio-Sponge 700 & 1000 Filter, 1 Count, Medium
Chewy.com
22
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$2.47
$14.99
Penn-Plax Cascade Aquarium Bio-Sponge 700 & 1000 Filter, 1 Count, Medium
Chewy.com
22
$22.99
Pryitier 10 Pack Filter Cartridge For Whisper Bio-Bag Filters, Large Aquarium Replacement Filter Cartridges For Whisper Filters 20I,40I/IQ20,30,45,60/
Amazon.com
417
$22.99
Pryitier 10 Pack Filter Cartridge For Whisper Bio-Bag Filters, Large Aquarium Replacement Filter Cartridges For Whisper Filters 20I,40I/IQ20,30,45,60/
Amazon.com
417
$27.78
$35.19
Marineland Bio-Wheel Penguin Aquarium Power Filter, 20-Gal
Chewy.com
687
21% off
$27.78
$35.19
Marineland Bio-Wheel Penguin Aquarium Power Filter, 20-Gal
Chewy.com
687
Biological Filtration: The Most Important Part of Your Aquarium | Understanding Aquariums Episode 1
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YouTubePatty’s Aquatics
Biological Filtration: The Most Important Part of Your Aquarium | Understanding Aquariums Episode 1
Biological filtration is the foundation of every healthy aquarium—and today, we’re breaking down exactly how it works. In this video, we dig into the two major types of beneficial bacteria (autotrophs and heterotrophs), why both are essential, and how your filter becomes a living ecosystem that keeps your fish alive. We also talk about mulm ...
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Shop biological filters for aquariums

Sponsored
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$189.99
Fluval 307 Perfomance Canister Filter - For Aquariums Up To 70 Gallons - Aquarium Canister Filter
Amazon.com
9K+
Free shipping
$189.99
Fluval 307 Perfomance Canister Filter - For Aquariums Up To 70 Gallons - Aquarium Canister Filter
Amazon.com
$16.99
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Trdzi Biowheel Aquarium Filters Compatible With Marineland 350 200 Fish Tank, Assembly Hang On Filters Cartridge Replacement Part For Bio-Wheel 200B
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Trdzi Biowheel Aquarium Filters Compatible With Marineland 350 200 Fish Tank, Assembly Hang On Filters Cartridge Replacement Part For Bio-Wheel 200B
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Cunina Large Aquarium Filter Cartridges Compatible With Tetra Whisper Bio Bag For Aquariums, Fish Tank Filter Large Fit For Tetra Whisper Filter 20I
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158
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Cunina Large Aquarium Filter Cartridges Compatible With Tetra Whisper Bio Bag For Aquariums, Fish Tank Filter Large Fit For Tetra Whisper Filter 20I
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Marineland PRBW150B 150B Bio Wheel Assembly Penguin Filter Parts For Aquarium
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Marineland PRBW150B 150B Bio Wheel Assembly Penguin Filter Parts For Aquarium
Amazon.com
$94.72
Marineland Penguin PRO Power Filter
Amazon.com
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Marineland Penguin PRO Power Filter
Amazon.com
$51.17
Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal & Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 Count
Chewy.com
35
$51.17
Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal & Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 Count
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$279.99
Tetrapond Bio-Active Pressure Filter, For Ponds Up To 4000 Gallons
Amazon.com
303
Free shipping
$279.99
Tetrapond Bio-Active Pressure Filter, For Ponds Up To 4000 Gallons
Amazon.com
$98.20
Aquatic Life Twist-In 4-Stage RO/DI Aquarium Water Filter System - Reverse Osmosis Filtration With Sediment, Carbon, Membrane & DI Resin - 75 GPD
Amazon.com
985
Free shipping
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Aquatic Life Twist-In 4-Stage RO/DI Aquarium Water Filter System - Reverse Osmosis Filtration With Sediment, Carbon, Membrane & DI Resin - 75 GPD
Amazon.com
$17.99
Cunina 8PCS Medium Filter Cartridges Compatible With Tetra Whisper Bio-Bag Filter Cartridges Medium For Aquariums 10I IQ10 PF10, Fish Tank Filter
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2
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Cunina 8PCS Medium Filter Cartridges Compatible With Tetra Whisper Bio-Bag Filter Cartridges Medium For Aquariums 10I IQ10 PF10, Fish Tank Filter
Amazon.com
$89.80
2" Thick Biological Filter Material - Green - 28" X 4'
123 Ponds
$89.80
2" Thick Biological Filter Material - Green - 28" X 4'
123 Ponds
$9.29
$13.39
Marineland Bio Wheel Assembly Fish Aquarium Filter
Chewy.com
145
30% off
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Marineland Bio Wheel Assembly Fish Aquarium Filter
Chewy.com
$12.69
Ipetboom Aquarium Crushed Coral Filter For Fish Tank Freshwater Ph, 500G Bio Ceramic Media Filtration Material Pond - Reusable Aquarium Landscape
Amazon.com
104
$12.69
Ipetboom Aquarium Crushed Coral Filter For Fish Tank Freshwater Ph, 500G Bio Ceramic Media Filtration Material Pond - Reusable Aquarium Landscape
Amazon.com
$36.54
$47.59
Marineland Bio-Wheel Penguin Aquarium Power Filter, 30-Gal
Chewy.com
687
23% off
$36.54
$47.59
Marineland Bio-Wheel Penguin Aquarium Power Filter, 30-Gal
Chewy.com
$26.12
$32.79
Tetra Whisper Internal Aquarium Power Filter With Bioscrubber, 10-30 Gal
Chewy.com
578
20% off
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Tetra Whisper Internal Aquarium Power Filter With Bioscrubber, 10-30 Gal
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$5.79
$9.49
Marineland Rite-Size S, T & X, Fit All C-Series, Magniflow Biological Aquarium Filtration Ceramic Filter Rings, 140 Count
Chewy.com
55
38% off
$5.79
$9.49
Marineland Rite-Size S, T & X, Fit All C-Series, Magniflow Biological Aquarium Filtration Ceramic Filter Rings, 140 Count
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$249.99
Penn-Plax Cascade 1500 Canister Filter - 350 GPH Aquarium Filter For Tanks Up To 200 Gallons - 360 Degree Flow Valves, Poly Fiber Pads, Bio-Sponge &
Amazon.com
10K+
Free shipping
$249.99
Penn-Plax Cascade 1500 Canister Filter - 350 GPH Aquarium Filter For Tanks Up To 200 Gallons - 360 Degree Flow Valves, Poly Fiber Pads, Bio-Sponge &
Amazon.com
$71.94
Aquaclear 70 Power Filter, Fish Tank Filter For 40- To 70-Gallon Aquariums, Black
Amazon.com
88
Free shipping
$71.94
Aquaclear 70 Power Filter, Fish Tank Filter For 40- To 70-Gallon Aquariums, Black
Amazon.com
$74.99
$79.99
Marineland Emperor Bio-Wheel Replacement Power Filter Cartridges
Amazon.com
4K+
Free shipping
$74.99
$79.99
Marineland Emperor Bio-Wheel Replacement Power Filter Cartridges
Amazon.com

Shop biological filters for aquariums

Sponsored
About our ads
$12.19
Fluval Biomax Biological Material Remover, 500 G - Biological Filter Media For Aquariums
Amazon.com
7K+
$12.19
Fluval Biomax Biological Material Remover, 500 G - Biological Filter Media For Aquariums
Amazon.com
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$463.99
Aquascape 95054 Ultraklean 3500 Biological Pressure Filter With 28 Watt UV Clarifier Sterilizer, 5,200 GPH,Black
Amazon.com
455
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Aquascape 95054 Ultraklean 3500 Biological Pressure Filter With 28 Watt UV Clarifier Sterilizer, 5,200 GPH,Black
Amazon.com
455
$36.89
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Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal
Chewy.com
694
44% off
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Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal
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694
$175.99
CNZ CPF-250 Pressure Bio Filter With 13W Clarifier Black
Amazon.com
Free shipping
$175.99
CNZ CPF-250 Pressure Bio Filter With 13W Clarifier Black
Amazon.com
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$369.99
Fluval FX6 High Performance Aquarium Filter, Canister Filter For Aquariums Up To 400 Gal.
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Fluval FX6 High Performance Aquarium Filter, Canister Filter For Aquariums Up To 400 Gal.
Amazon.com
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$19.97
Marineland Penguin Bio-Wheel Replacement Filter Cartridges, Rite-Size C, 6 Count
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Marineland Penguin Bio-Wheel Replacement Filter Cartridges, Rite-Size C, 6 Count
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$52.99
Fluval 50 Power Filter - Aquarium Filter For 20 To 50 Gallon Fish Tanks - Quiet Energy Efficient Pump - Mechanical, Chemical & Biological Filtration -
Amazon.com
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$52.99
Fluval 50 Power Filter - Aquarium Filter For 20 To 50 Gallon Fish Tanks - Quiet Energy Efficient Pump - Mechanical, Chemical & Biological Filtration -
Amazon.com
6K+
$149.99
VIVOHOME Pressurized Biological Pond Filter, 1840GPH Suitable For Koi Ponds Up To 1000 Gallons Or Ornamental Ponds Up To 2100 Gallons
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1K+
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VIVOHOME Pressurized Biological Pond Filter, 1840GPH Suitable For Koi Ponds Up To 1000 Gallons Or Ornamental Ponds Up To 2100 Gallons
Amazon.com
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$17.77
Brightwell Aquatics Microbacter7 Complete Bioculture For Fish Tank Or Aquarium - Populates Biological Filter Media For Saltwater And Freshwater Fish -
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3K+
$17.77
Brightwell Aquatics Microbacter7 Complete Bioculture For Fish Tank Or Aquarium - Populates Biological Filter Media For Saltwater And Freshwater Fish -
Amazon.com
3K+
$221.99
$244.50
Fish Mate Powerclenz Bio Filter, 1500 GPH
Chewy.com
$221.99
$244.50
Fish Mate Powerclenz Bio Filter, 1500 GPH
Chewy.com
$36.89
$56.19
Marineland Bio-Wheel Penguin Aquarium Power Filter, 50-Gal
Chewy.com
694
34% off
$36.89
$56.19
Marineland Bio-Wheel Penguin Aquarium Power Filter, 50-Gal
Chewy.com
694
$51.17
Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal & Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 Count
Chewy.com
35
$51.17
Marineland Bio-Wheel Penguin Aquarium Power Filter, 75-Gal & Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 Count
Chewy.com
35
$189.99
Fluval 307 Perfomance Canister Filter - For Aquariums Up To 70 Gallons - Aquarium Canister Filter
Amazon.com
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