Eheim Classic 350 vs Fluval 407
Two very different philosophies of canister filter. The Eheim Classic 350 is the reliability benchmark — one sealed chamber, a silent pump, nothing to break. The Fluval 407 is the high-flow, tool-free all-rounder. Here's which suits your tank.
The quick verdict
If you want a big-tank filter you fit once and trust for a decade — and you don't mind packing the media by hand — the Eheim Classic 350 is superb value and near-silent. If you want more flow, far more media capacity and the easiest servicing in the class, the Fluval 407 is the more capable, more convenient canister — for more money.
| Eheim Classic 350 | Fluval 407 | |
|---|---|---|
| Flow rate | 620 L/h | 1450 L/h |
| Rated tank size | Up to 350 L | Up to 500 L |
| Media capacity | ≈ 3 L single chamber | ≈ 7.6 L, 4 baskets |
| Servicing | Pack chamber by hand | EZ-Lift baskets, Aquastop valve |
| Noise | Near-silent | Very quiet |
| Reliability record | Legendary, runs a decade+ | Very good |
| Value | ≈ $130 | ≈ $250 |
Simplicity vs capacity
The Eheim Classic 350 wins by doing almost nothing clever: no baskets, no valves, just a sealed canister and a legendary German pump. Fewer parts means less to leak, clog or break, which is why Classics routinely outlast everything else on the tank. The trade-off is that you pack the single chamber yourself and prime the siphon manually. The Fluval 407 flips that: four stacking baskets lift out in one movement, the Aquastop valve lets you pull the hoses without draining the canister, and there's roughly double the media volume. It's the filter you buy when servicing speed and raw capacity matter more than absolute simplicity.
Which should you buy?
Our pick
For a moderately-stocked 200–350 L tank where reliability and quiet come first, the Eheim Classic 350 is hard to beat and costs far less. If you have a heavily-stocked or planted tank up to 500 L, or you simply want the fastest, tidiest servicing, the Fluval 407 is the more complete canister. Read the full Eheim Classic 350 review and Fluval 407 review, or see all aquarium filters.
Frequently asked questions
Is the Eheim Classic 350 or Fluval 407 better?
They aim at different priorities. The Eheim Classic 350 (model 2215) is the simplicity-and-reliability pick: one big media chamber, a near-silent pump and almost nothing to go wrong, at a lower price. The Fluval 407 pushes far more flow, holds much more media in tool-free baskets and services faster. Pick the Eheim for fit-and-forget reliability on a moderate tank; pick the 407 for flow, capacity and easy maintenance.
Does the Eheim Classic 350 have media baskets like the Fluval?
No — that is the core difference. The Classic 350 has a single sealed chamber that you pack by hand, mechanical-first then biological. The Fluval 407 has four stacking EZ-Lift baskets that raise the whole media stack out in one movement. Fewer parts on the Eheim means less to fail; the Fluval trades that for much quicker servicing.
Which canister is quieter?
Both are quiet, but the Eheim Classic is the benchmark for silence — its permanent-magnet pump runs close to inaudible and sips power. The Fluval 407 is genuinely quiet too, with the 07-series pump up to 25% quieter than the old 406, but the simpler Eheim edges it in a bedroom.
Found your model? Buy it at the right price.
UniverTrack tracks the real price of your aquarium gear across several retailers, spots fake discounts and warns you when it's genuinely the right moment to buy — with an AI assistant to guide you.