Eheim Classic 2211 External Canister Filter Up to 40 Gallons
Looking for a filter that just quietly does its job for years? The Eheim Classic 2211 External Canister Filter is one of the most trusted little workhorses in the hobby. Built in Germany and famous for its near-silent operation, the 2211 delivers full mechanical, biological, and chemical filtration for aquariums up to 40 gallons — keeping your water crystal clear without taking up any space inside the tank.
It's a fantastic match for smaller freshwater or saltwater setups, planted nano tanks, shrimp tanks, and quarantine systems where stable, gentle flow and rock-solid reliability matter. With its sturdy motor, generous media volume for its size, and the proven Eheim Classic design, this is a filter you set up once and forget about.
Why aquarists love the Classic 2211
- Compact external canister filter rated for aquariums up to 40 gallons
- German-engineered for whisper-quiet, long-lasting operation
- Complete mechanical, biological, and chemical filtration in one unit
- Ships with tubing, spray bar, intake strainer, and connectors
- Energy-efficient (just ~5 watts) with an impressively long service life
- Fully customizable with your choice of Eheim filter media
Specifications
- Model: Eheim Classic 2211
- Aquarium Size: Up to 40 gallons
- Pump Output: ~60 GPH (300 L/h)
- Filter Volume: ~1 liter
- Power Consumption: ~5 watts
- Dimensions: 4.25" diameter × 11.5" height
- For Use With: Freshwater and saltwater aquariums
Setup & care tips
- Position the canister below the aquarium water level so the siphon flows properly.
- Rinse filter pads in aquarium water (never tap water) to protect your beneficial bacteria.
- Swap fine pads every few weeks, coarse pads when they wear out, and carbon pads as needed.
- For best results, run it with Eheim media — Substrat Pro, Mech, and the coarse, fine, and carbon pads.
Keep it running its best with genuine Eheim replacements: 2211 fine filter pads, coarse filter pads, activated carbon pads, and a spare inlet strainer. Browse the full Eheim equipment lineup or our complete aquarium filtration collection for more options.
FAQs
Q: Does the 2211 come with media?
A: It may include starter media depending on the package. For the best results, pair it with Eheim Substrat Pro and Eheim Mech along with the filter pads above.
Q: Is the 2211 powerful enough for a 40-gallon tank?
A: Yes — though for heavily stocked aquariums it really shines on tanks in the 20–30 gallon range for optimal turnover.
Q: How often should I clean it?
A: Roughly every 4–6 weeks, depending on your stocking level and tank conditions.
This one is a customer favorite and sells out fast — it's currently between shipments. Give us a call at 307-369-1118 or stop by Tropical Treasures in Cheyenne to check current availability or have us set one aside for you.
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