Compact Internal Filters
Gentle compact filtration systems including sponge and internal filters for softer-flow aquariums.
Aquarium Filtration - Understanding Your Options
Different aquarium systems require different approaches to filtration, circulation, biological stability, and maintenance. Choose an option below toa better understand which filtration systems may suit your setup.
Compare Filter Systems
Quickly compare common aquarium filter systems based on circulation, aeration, media capacity, CO2 compatibility, maintenance, and installation practicality.
Factors
HOB
Hang-On Canister
Canister
Sponge
Internal
Sump
Less In Tank Space
Media Volume
Aeration
CO2 Friendly
Flow Direction
Top-down
Side flow
Directional
Airlift
Local flow
Custom
Maintenance
External Space
Strong fit
Situational
Limited fit
Performance can vary based on model, setup, maintenance routine, stocking level, and aquarium layout.
Find The Right Filter For Your Aquarium
Different aquarium systems require different filtration approaches depending on tank size, livestock, planting style, circulation needs, and maintenance goals.
Nano Tanks
Compact systems under 60cm.
CO2 Planted
Higher circulation and stability needs.
Fish-Only Tanks
Focus on waste and oxygenation.
Heavy Bioload
Requires stronger filtration capacity.
Beginner Friendly
Simple maintenance-focused setups.
What Filter Fits My Tank?
Start from your aquarium type and size, then match it to common filter systems that are usually suitable for that setup.
HOB
Hang-On Canister
Canister
Sponge
Internal
Sump
Shrimp Tank
<30cm
<60cm
CO2 Setup
Prioritise gentle flow, stable biofilm, and shrimp-safe intake protection.
Fish-Only / Hardy Plant
<60cm
60–120cm
>120cm
African Cichlid Tank
60–120cm
>120cm
Focus on oxygenation, waste handling, and strong circulation.
Terrapin Tank
<60cm
60–120cm
>120cm
Heavy waste output needs oversized biological and mechanical filtration.
Monster Fish Tank
>120cm
>150cm
Heavy feeding and large waste output need oversized filtration.
Choosing A Filter Style
Hang-On-Back Filters
Compact beginner-friendly filtration systems that provide mechanical and biological filtration while remaining easy to install,
Canister Filters
High-capacity external filtration systems designed for stronger circulation, larger media volume, cleaner layouts, and more demanding planted or fish systems.
Sump Systems
Large-scale filtration systems built for high bioload aquariums, monster fish tanks, marine systems, and advanced filtration flexibility.
Understanding Different Filter Systems
Explore how different aquarium filter systems function, where they work best, and the tradeoffs behind each setup style.
GENTLE FILTRATION
Understanding Sponge Filters
Simple air-powered filtration systems commonly used for shrimp tanks, fry tanks, and softer-flow aquariums.
Explore Sponge Filters
COMPACT ALL-ROUNDERS
Understanding HOB Filters
Popular beginner-friendly filters that combine compact installation, surface movement, and easy maintenance.
Explore HOB Filters
EXTERNAL COMPACT SYSTEMS
Understanding Hang-On Canister Filters
Compact external filtration systems offering directional flow and larger media capacity for smaller aquariums.
Explore Hang-On Canisters
HIGH CAPACITY SYSTEMS
Understanding Canister Filters
High-capacity external filtration systems suited for planted tanks, larger aquariums, and stronger biological stability.
Explore Canister Filters
SPACE-SAVING FILTRATION
Understanding Internal Filters
Compact in-tank filtration systems commonly used for smaller aquariums and practical beginner setups.
Explore Internal Filters
LARGE SCALE FILTRATION
Understanding Sump Systems
Advanced high-volume filtration systems designed for monster fish tanks, marine systems, and oversized aquariums.
Explore Sump Systems
Continue Building Your Aquarium Knowledge
Explore filter media systems, long-term maintenance practices, and broader aquarium ecosystem care guides.
Understanding Filter Media
FILTER MEDIA
Explore how sponge, ceramic, biological, and mechanical media support aquarium filtration stability.
Maintaining Filters Safely
FILTER MAINTENANCE
Learn practical filter cleaning approaches without disrupting beneficial bacterial ecosystems.
Aquarium Maintenance Tips
AQUARIUM CARE
Explore water changes, algae control, circulation, and long-term aquarium ecosystem care.
Need help with another system? Return to the Care Hub for calculators, filtration guides, and ecosystem support.
Return to Care Hub ↗
