BUYING QUESTIONS & ANSWERS
Choose Aquarium filters around your needs
Read the practical answer to a requirement, check the matching model reviews, or combine your own choices in the questionnaire.
Find my match →Start with one requirement
- Filter arrangement: External canister
- Filter arrangement: Hang-on filter
- Filter arrangement: Internal filter
- Below-tank space: Yes, space is available
- Below-tank space: No, no suitable space
- Earlier models: No, compare current-generation models only
- Earlier models: Yes, include earlier-generation models
- High-waste evidence: Yes, this evidence is essential
- What is the aquarium's approximate water volume?
- Minimum manufacturer-listed media-basket volume
- Minimum basket volume: 3.9
- Minimum basket volume: 4.0
- Minimum basket volume: 1.9
- Minimum basket volume: 2.0
- Minimum basket volume: 3.6
- Minimum basket volume: 3.7
- Minimum basket volume: 1.0
- Minimum basket volume: 1.1
- Minimum basket volume: 1.3
- Minimum basket volume: 1.4
- Minimum basket volume: 0.1
- Minimum basket volume: 0.2
Combine your requirements
- Tank volume: 9.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 10; Earlier models: Yes, include earlier-generation models
- Tank volume: 160; Earlier models: Yes, include earlier-generation models
- Tank volume: 225; Earlier models: Yes, include earlier-generation models
- Tank volume: 20; Earlier models: Yes, include earlier-generation models
- Tank volume: 30; Earlier models: Yes, include earlier-generation models
- Tank volume: 50; Earlier models: Yes, include earlier-generation models
- Tank volume: 15; Earlier models: Yes, include earlier-generation models
- Tank volume: 26; Earlier models: Yes, include earlier-generation models
- Tank volume: 40; Earlier models: Yes, include earlier-generation models
- Tank volume: 55; Earlier models: Yes, include earlier-generation models
- Tank volume: 80; Earlier models: Yes, include earlier-generation models
- Tank volume: 15.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 16; Earlier models: Yes, include earlier-generation models
- Tank volume: 42; Earlier models: Yes, include earlier-generation models
- Tank volume: 42.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 52.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 53; Earlier models: Yes, include earlier-generation models
- Tank volume: 68.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 69; Earlier models: Yes, include earlier-generation models
- Tank volume: 79; Earlier models: Yes, include earlier-generation models
- Tank volume: 79.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 158.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 159; Earlier models: Yes, include earlier-generation models
- Tank volume: 24.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 25; Earlier models: Yes, include earlier-generation models
- Tank volume: 64.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 65; Earlier models: Yes, include earlier-generation models
- Tank volume: 80.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 104.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 105; Earlier models: Yes, include earlier-generation models
- Tank volume: 120; Earlier models: Yes, include earlier-generation models
- Tank volume: 120.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 185; Earlier models: Yes, include earlier-generation models
- Tank volume: 185.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 49.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 396; Earlier models: Yes, include earlier-generation models
- Tank volume: 396.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 400; Earlier models: Yes, include earlier-generation models
- Tank volume: 400.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 4.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 5; Earlier models: Yes, include earlier-generation models
- Tank volume: 26.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 198; Earlier models: Yes, include earlier-generation models
- Tank volume: 198.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 19.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 25.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 50.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 29.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 65.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 90; Earlier models: Yes, include earlier-generation models
- Tank volume: 90.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 130; Earlier models: Yes, include earlier-generation models
- Tank volume: 130.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 2.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 3.0; Earlier models: Yes, include earlier-generation models
- Tank volume: 21.0; Earlier models: Yes, include earlier-generation models
- Tank volume: 21.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 66; Earlier models: Yes, include earlier-generation models
- Tank volume: 66.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 1.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 2; Earlier models: Yes, include earlier-generation models
- Tank volume: 30.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 7.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 8; Earlier models: Yes, include earlier-generation models
- Tank volume: 8.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 14.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 34.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 35; Earlier models: Yes, include earlier-generation models
- Tank volume: 35.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 54.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 75; Earlier models: Yes, include earlier-generation models
- Tank volume: 75.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 99.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 100; Earlier models: Yes, include earlier-generation models
- Tank volume: 150; Earlier models: Yes, include earlier-generation models
- Tank volume: 150.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 20; Earlier models: Yes, include earlier-generation models
- Tank volume: 20.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 30; Earlier models: Yes, include earlier-generation models
- Tank volume: 30.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 45; Earlier models: Yes, include earlier-generation models
- Tank volume: 45.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 55; Earlier models: Yes, include earlier-generation models
- Tank volume: 55.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 90; Earlier models: Yes, include earlier-generation models
- Tank volume: 90.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 1; Earlier models: Yes, include earlier-generation models
- Tank volume: 3; Earlier models: Yes, include earlier-generation models
- Tank volume: 3.5; Earlier models: Yes, include earlier-generation models
- Tank volume: 20; Earlier models: Yes, include earlier-generation models
- Tank volume: 20.5; Earlier models: Yes, include earlier-generation models
- Filter arrangement: External canister; Below-tank space: No, no suitable space
- Filter arrangement: External canister; Below-tank space: Yes, space is available
- Filter arrangement: Internal filter; Below-tank space: No, no suitable space
- Filter arrangement: Hang-on filter; Below-tank space: No, no suitable space
- Filter arrangement: Hang-on filter; Below-tank space: Yes, space is available
- Filter arrangement: Internal filter; Below-tank space: Yes, space is available
- Tank volume: 30; Filter arrangement: External canister
- Tank volume: 30; Filter arrangement: Internal filter
- Tank volume: 30; Filter arrangement: Hang-on filter
- Tank volume: 20; Filter arrangement: Hang-on filter; Earlier models: No, compare current-generation models only
- Tank volume: 20.5; Filter arrangement: Hang-on filter; Earlier models: No, compare current-generation models only
- Tank volume: 20; Filter arrangement: Internal filter
- Tank volume: 15; Filter arrangement: Internal filter
- Tank volume: 15.5; Filter arrangement: Internal filter
- Tank volume: 3; Filter arrangement: Internal filter
- Tank volume: 20; Filter arrangement: Hang-on filter; Below-tank space: No, no suitable space; Earlier models: Yes, include earlier-generation models
- Tank volume: 20.5; Filter arrangement: Hang-on filter; Below-tank space: No, no suitable space; Earlier models: Yes, include earlier-generation models
- Filter arrangement: Hang-on filter; Earlier models: No, compare current-generation models only
- Filter arrangement: Hang-on filter; Earlier models: Yes, include earlier-generation models
- Filter arrangement: External canister; Earlier models: No, compare current-generation models only
- Filter arrangement: External canister; Earlier models: Yes, include earlier-generation models
- Filter arrangement: Internal filter; Earlier models: No, compare current-generation models only
- Filter arrangement: Internal filter; Earlier models: Yes, include earlier-generation models
- Filter arrangement: External canister; Minimum basket volume: 4.0
- Filter arrangement: Hang-on filter; Minimum basket volume: 4.0
- Filter arrangement: Internal filter; Minimum basket volume: 1.2
- Filter arrangement: External canister; Minimum basket volume: 1.9
- Filter arrangement: External canister; Minimum basket volume: 2.0
- Filter arrangement: Internal filter; Minimum basket volume: 0.2; Earlier models: No, compare current-generation models only
- Filter arrangement: Internal filter; Minimum basket volume: 0.3; Earlier models: No, compare current-generation models only
- Filter arrangement: Internal filter; Minimum basket volume: 0.6; Earlier models: No, compare current-generation models only
- Filter arrangement: Internal filter; Minimum basket volume: 0.7; Earlier models: No, compare current-generation models only
- Filter arrangement: Internal filter; Minimum basket volume: 0.1; Earlier models: No, compare current-generation models only
- Tank volume: 50; Minimum basket volume: 4.0
- Tank volume: 50; Minimum basket volume: 4.3
- Tank volume: 3; Minimum basket volume: 0.1; Filter arrangement: Internal filter; Below-tank space: No, no suitable space; Earlier models: No, compare current-generation models only
- High-waste evidence: Yes, this evidence is essential; Tank volume: 100; Filter arrangement: External canister
- High-waste evidence: Yes, this evidence is essential; Tank volume: 20; Filter arrangement: Internal filter
- High-waste evidence: Yes, this evidence is essential; Tank volume: 3; Filter arrangement: Internal filter
- High-waste evidence: Yes, this evidence is essential; Tank volume: 10; Filter arrangement: Internal filter
- Tank volume: 20; Filter arrangement: External canister; Below-tank space: No, no suitable space
- Tank volume: 50; Filter arrangement: External canister; Below-tank space: Yes, space is available
- Tank volume: 50; Filter arrangement: External canister; Below-tank space: No, no suitable space
- Tank volume: 110; Filter arrangement: External canister; Below-tank space: Yes, space is available
- Tank volume: 110; Filter arrangement: External canister; Below-tank space: No, no suitable space
- Tank volume: 40; Filter arrangement: External canister; Below-tank space: No, no suitable space; Earlier models: Yes, include earlier-generation models; Minimum basket volume: 1.0
- Tank volume: 40; Filter arrangement: External canister; Below-tank space: Yes, space is available; Earlier models: No, compare current-generation models only
- Tank volume: 3; Filter arrangement: Internal filter; Below-tank space: No, no suitable space; Earlier models: No, compare current-generation models only
- Tank volume: 10; Filter arrangement: Internal filter; Below-tank space: No, no suitable space; Earlier models: No, compare current-generation models only
Buying guides and setup advice
- Start with the tank, then check the filter
- Choose an aquarium filter without treating gallons as a load rating
- Plan an external canister installation before buying
- Plan filter media and maintenance as part of aquarium fit
- External canister, internal and hang-on aquarium filters
- Fit a hang-on aquarium filter to the tank, rim and room
- Read filter-finder answers as evidence, boundaries and tradeoffs