Independent Lab Testing · Updated 2026

The data-driven guide to fish tank filters.

We measure flow rate, noise levels (dB), and water clarity on real tanks so you can pick the right filter the first time.

  • ✓
    Real-world testing on stocked aquariums, not empty tanks.
  • ✓
    Data comparisons for flow drop-off and noise output.
  • ✓
    Unbiased ranking of Fluval, Eheim, Marineland, and more.
Browse Canister Filters Best for medium–large tanks (40g+) Browse HOB Filters Easy setup for community tanks Beginner Setups Step-by-step clear water guides
#1 CHOICE
Fluval FX6 Canister Filter
Fluval FX Series
9.8/10 · Canister
Seachem Tidal HOB Filter
Seachem Tidal
9.4/10 · HOB
AquaClear Filter System
AquaClear
9.1/10 · Value
100% Independent Research
Hands-on Testing
No Sponsored Rankings

Popular Categories

Start with the type of filter that matches your tank size.
Best canister filters for large aquariums

Best Canister Filters

Ranked by flow rate, media capacity, and silence. Perfect for 40-200 gallon tanks.

Read Guide →
Best Hang on Back filters for community tanks

Best HOB Filters

The "Hang-on-Back" standard. We tested priming issues, bypass, and ease of cleaning.

Read Guide →
Complete fish tank setup guide

Beginner Tank Setups

Don't guess. Here are the exact filter, heater, and tank combos for a successful start.

View Setups →