Home Fluval C4 Hang-On Power Filter – 900 L/h, 5-Stage Filtration
Fluval C4 aquarium hang-on power filter box with five-stage filtration and tropical fish graphics
Hang-on aquarium power filter with transparent body and red internal components
Aquarium hang-on power filter with five-stage filtration, transparent housing, and red filter media
Fluval C4 aquarium hang-on power filter box with five-stage filtration and tropical fish graphics
Hang-on aquarium power filter with transparent body and red internal components
Aquarium hang-on power filter with five-stage filtration, transparent housing, and red filter media

Fluval C4 Hang-On Power Filter – 900 L/h, 5-Stage Filtration

$119.95

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Description

Fluval C4 Hang On Aquarium Filter 265 litres

Upgrade your aquarium’s filtration with the Fluval C4 Hang-On Power Filter, designed for efficient, high-capacity performance. This advanced hang-on-back (HOB) filter combines the convenience of clip-on mounting with the thorough filtration power of a canister system.

Expertly crafted for tanks up to 265 L (70 US gal), the C4 offers a strong flow rate of 900 L/h (238 US GPH) while consuming just 5 W of power, delivering a perfect blend of efficiency and performance 

Its innovative 5-stage filtration system includes:

  • Two mechanical stages for effective debris removal

  • A chemical stage using activated carbon for odor and toxin control

  • Two biological stages—featuring a bio-screen and Fluval’s C-Nodes—for powerful beneficial bacteria growth 

A standout feature is Fluval’s refiltration control system, which allows for flow rate adjustment and increased dwell time without compromising water clarity or impacting delicate fish and plants 

Built in Italy and suitable for both freshwater and marine setups, the modular design allows you to service each media stage separately—keeping beneficial bacteria intact and preserving water quality during maintenance 

Key Features:

  • Supports aquariums up to 265 L (70 US gal)

  • Flow rate: 900 L/h (238 US GPH) with just 5 W power consumption

  • 5-stage filtration: dual mechanical, chemical, dual biological

  • Refiltration control for gentle flow and extended media contact

  • Modular media cartridges for easy, targeted maintenance

  • Compact, space-saving dimensions (approx. 22.8 × 16.5 × 21.5 cm)

  • Australian Plug

 

Reviews
Description

Fluval C4 Hang On Aquarium Filter 265 litres

Upgrade your aquarium’s filtration with the Fluval C4 Hang-On Power Filter, designed for efficient, high-capacity performance. This advanced hang-on-back (HOB) filter combines the convenience of clip-on mounting with the thorough filtration power of a canister system.

Expertly crafted for tanks up to 265 L (70 US gal), the C4 offers a strong flow rate of 900 L/h (238 US GPH) while consuming just 5 W of power, delivering a perfect blend of efficiency and performance 

Its innovative 5-stage filtration system includes:

  • Two mechanical stages for effective debris removal

  • A chemical stage using activated carbon for odor and toxin control

  • Two biological stages—featuring a bio-screen and Fluval’s C-Nodes—for powerful beneficial bacteria growth 

A standout feature is Fluval’s refiltration control system, which allows for flow rate adjustment and increased dwell time without compromising water clarity or impacting delicate fish and plants 

Built in Italy and suitable for both freshwater and marine setups, the modular design allows you to service each media stage separately—keeping beneficial bacteria intact and preserving water quality during maintenance 

Key Features:

  • Supports aquariums up to 265 L (70 US gal)

  • Flow rate: 900 L/h (238 US GPH) with just 5 W power consumption

  • 5-stage filtration: dual mechanical, chemical, dual biological

  • Refiltration control for gentle flow and extended media contact

  • Modular media cartridges for easy, targeted maintenance

  • Compact, space-saving dimensions (approx. 22.8 × 16.5 × 21.5 cm)

  • Australian Plug

 

Reviews
Fluval C4 Hang-On Power Filter – 900 L/h, 5-Stage Filtration
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{"id":6783802933432,"title":"Fluval C4 Hang-On Power Filter – 900 L\/h, 5-Stage Filtration","handle":"fluval-c4-hang-on-filter","description":"\u003cp\u003eFluval C4 Hang On Aquarium Filter 265 litres\u003c\/p\u003e\n\u003cp data-end=\"444\" data-start=\"407\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eUpgrade your aquarium’s filtration with the \u003cstrong data-end=\"78\" data-start=\"44\"\u003eFluval C4 Hang-On Power Filter\u003c\/strong\u003e, designed for efficient, high-capacity performance. This advanced hang-on-back (HOB) filter combines the convenience of clip-on mounting with the thorough filtration power of a canister system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"522\" data-start=\"446\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eExpertly crafted for tanks up to \u003cstrong data-end=\"54\" data-start=\"33\"\u003e265 L (70 US gal)\u003c\/strong\u003e, the C4 offers a strong \u003cstrong data-end=\"103\" data-start=\"79\"\u003eflow rate of 900 L\/h\u003c\/strong\u003e (238 US GPH) while consuming just 5 W of power, delivering a perfect blend of efficiency and performance\u003c\/span\u003e \u003c\/p\u003e\n\u003cp data-end=\"561\" data-start=\"524\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIts \u003cstrong data-end=\"44\" data-start=\"4\"\u003einnovative 5-stage filtration system\u003c\/strong\u003e includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-end=\"721\" data-start=\"562\"\u003e\n\u003cli data-end=\"601\" data-start=\"562\"\u003e\n\u003cp data-end=\"601\" data-start=\"564\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eTwo mechanical stages for effective debris removal\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"641\" data-start=\"602\"\u003e\n\u003cp data-end=\"641\" data-start=\"604\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eA chemical stage using activated carbon for odor and toxin control\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"721\" data-start=\"642\"\u003e\n\u003cp data-end=\"721\" data-start=\"644\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eTwo biological stages—featuring a bio-screen and Fluval’s C-Nodes—for powerful beneficial bacteria growth\u003c\/span\u003e \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"803\" data-start=\"723\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eA standout feature is Fluval’s \u003cstrong data-end=\"62\" data-start=\"31\"\u003erefiltration control system\u003c\/strong\u003e, which allows for flow rate adjustment and increased dwell time without compromising water clarity or impacting delicate fish and plants\u003c\/span\u003e \u003c\/p\u003e\n\u003cp data-end=\"885\" data-start=\"805\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eBuilt in Italy and suitable for both freshwater and marine setups, the modular design allows you to service each media stage separately—keeping beneficial bacteria intact and preserving water quality during maintenance\u003c\/span\u003e \u003c\/p\u003e\n\u003cp data-end=\"904\" data-start=\"887\"\u003e\u003cstrong data-end=\"904\" data-start=\"887\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1196\" data-start=\"905\"\u003e\n\u003cli data-end=\"946\" data-start=\"905\"\u003e\n\u003cp data-end=\"946\" data-start=\"907\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eSupports aquariums up to \u003cstrong data-is-last-node=\"\" data-end=\"46\" data-start=\"25\"\u003e265 L (70 US gal)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"988\" data-start=\"947\"\u003e\n\u003cp data-end=\"988\" data-start=\"949\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"14\" data-start=\"0\"\u003eFlow rate:\u003c\/strong\u003e 900 L\/h (238 US GPH) with just 5 W power consumption\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1030\" data-start=\"989\"\u003e\n\u003cp data-end=\"1030\" data-start=\"991\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"23\" data-start=\"0\"\u003e5-stage filtration:\u003c\/strong\u003e dual mechanical, chemical, dual biological\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1072\" data-start=\"1031\"\u003e\n\u003cp data-end=\"1072\" data-start=\"1033\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"24\" data-start=\"0\"\u003eRefiltration control\u003c\/strong\u003e for gentle flow and extended media contact\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1114\" data-start=\"1073\"\u003e\n\u003cp data-end=\"1114\" data-start=\"1075\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eModular media cartridges for easy, targeted maintenance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1196\" data-start=\"1115\"\u003e\n\u003cp data-end=\"1196\" data-start=\"1117\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCompact, space-saving dimensions (approx. 22.8 × 16.5 × 21.5 cm)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"text\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAustralian Plug\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2021-07-22T16:35:53+10:00","created_at":"2021-07-22T16:35:56+10:00","vendor":"Fluval","type":"Aquarium Filters","tags":["Fish Filtration \u0026 Circulation","Turtle Products"],"price":11995,"price_min":11995,"price_max":11995,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":40105544515768,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"FLC03","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Fluval C4 Hang-On Power Filter – 900 L\/h, 5-Stage Filtration","public_title":null,"options":["Default Title"],"price":11995,"weight":3000,"compare_at_price":null,"inventory_management":"shopify","barcode":"0015561140034","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-1.jpg?v=1763623002","\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-2.jpg?v=1763623002","\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-3.jpg?v=1763623002"],"featured_image":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-1.jpg?v=1763623002","options":["Title"],"media":[{"alt":"Fluval C4 aquarium hang-on power filter box with five-stage filtration and tropical fish graphics","id":32000420937973,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-1.jpg?v=1763623002"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-1.jpg?v=1763623002","width":1000},{"alt":"Hang-on aquarium power filter with transparent body and red internal components","id":32000421200117,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-2.jpg?v=1763623002"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-2.jpg?v=1763623002","width":1000},{"alt":"Aquarium hang-on power filter with five-stage filtration, transparent housing, and red filter media","id":32000421232885,"position":3,"preview_image":{"aspect_ratio":1.0,"height":900,"width":900,"src":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-3.jpg?v=1763623002"},"aspect_ratio":1.0,"height":900,"media_type":"image","src":"\/\/www.amazingamazon.com.au\/cdn\/shop\/files\/fluval-c4-hang-on-power-filter-900-lh-5-stage-filtration-amazing-amazon-3.jpg?v=1763623002","width":900}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eFluval C4 Hang On Aquarium Filter 265 litres\u003c\/p\u003e\n\u003cp data-end=\"444\" data-start=\"407\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eUpgrade your aquarium’s filtration with the \u003cstrong data-end=\"78\" data-start=\"44\"\u003eFluval C4 Hang-On Power Filter\u003c\/strong\u003e, designed for efficient, high-capacity performance. This advanced hang-on-back (HOB) filter combines the convenience of clip-on mounting with the thorough filtration power of a canister system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"522\" data-start=\"446\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eExpertly crafted for tanks up to \u003cstrong data-end=\"54\" data-start=\"33\"\u003e265 L (70 US gal)\u003c\/strong\u003e, the C4 offers a strong \u003cstrong data-end=\"103\" data-start=\"79\"\u003eflow rate of 900 L\/h\u003c\/strong\u003e (238 US GPH) while consuming just 5 W of power, delivering a perfect blend of efficiency and performance\u003c\/span\u003e \u003c\/p\u003e\n\u003cp data-end=\"561\" data-start=\"524\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIts \u003cstrong data-end=\"44\" data-start=\"4\"\u003einnovative 5-stage filtration system\u003c\/strong\u003e includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-end=\"721\" data-start=\"562\"\u003e\n\u003cli data-end=\"601\" data-start=\"562\"\u003e\n\u003cp data-end=\"601\" data-start=\"564\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eTwo mechanical stages for effective debris removal\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"641\" data-start=\"602\"\u003e\n\u003cp data-end=\"641\" data-start=\"604\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eA chemical stage using activated carbon for odor and toxin control\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"721\" data-start=\"642\"\u003e\n\u003cp data-end=\"721\" data-start=\"644\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eTwo biological stages—featuring a bio-screen and Fluval’s C-Nodes—for powerful beneficial bacteria growth\u003c\/span\u003e \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"803\" data-start=\"723\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eA standout feature is Fluval’s \u003cstrong data-end=\"62\" data-start=\"31\"\u003erefiltration control system\u003c\/strong\u003e, which allows for flow rate adjustment and increased dwell time without compromising water clarity or impacting delicate fish and plants\u003c\/span\u003e \u003c\/p\u003e\n\u003cp data-end=\"885\" data-start=\"805\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eBuilt in Italy and suitable for both freshwater and marine setups, the modular design allows you to service each media stage separately—keeping beneficial bacteria intact and preserving water quality during maintenance\u003c\/span\u003e \u003c\/p\u003e\n\u003cp data-end=\"904\" data-start=\"887\"\u003e\u003cstrong data-end=\"904\" data-start=\"887\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1196\" data-start=\"905\"\u003e\n\u003cli data-end=\"946\" data-start=\"905\"\u003e\n\u003cp data-end=\"946\" data-start=\"907\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eSupports aquariums up to \u003cstrong data-is-last-node=\"\" data-end=\"46\" data-start=\"25\"\u003e265 L (70 US gal)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"988\" data-start=\"947\"\u003e\n\u003cp data-end=\"988\" data-start=\"949\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"14\" data-start=\"0\"\u003eFlow rate:\u003c\/strong\u003e 900 L\/h (238 US GPH) with just 5 W power consumption\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1030\" data-start=\"989\"\u003e\n\u003cp data-end=\"1030\" data-start=\"991\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"23\" data-start=\"0\"\u003e5-stage filtration:\u003c\/strong\u003e dual mechanical, chemical, dual biological\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1072\" data-start=\"1031\"\u003e\n\u003cp data-end=\"1072\" data-start=\"1033\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"24\" data-start=\"0\"\u003eRefiltration control\u003c\/strong\u003e for gentle flow and extended media contact\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1114\" data-start=\"1073\"\u003e\n\u003cp data-end=\"1114\" data-start=\"1075\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eModular media cartridges for easy, targeted maintenance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1196\" data-start=\"1115\"\u003e\n\u003cp data-end=\"1196\" data-start=\"1117\"\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCompact, space-saving dimensions (approx. 22.8 × 16.5 × 21.5 cm)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"text\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAustralian Plug\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e"}