Fluval 107 vs 207: Flow, Media Capacity & Tank Fit

The Fluval 107 and 207 use the same 07 Series architecture and the same 7.5 x 7-inch footprint, 10W 120V draw and 4.75 ft maximum-head specification. The 207 adds aquarium range, media volume and filter circulation, but its body is 2.8 inches taller. This comparison uses current Fluval documentation and exact product-identity evidence checked September 25, 2026. PetGearReport has not physically tested these filters, measured installed flow or noise, or observed long-term durability.

#1 · Our PickBest fit in the 20–30 gal overlap

Fluval 107 Performance Canister Filter

Best for: 10–30 gallon setups, especially the 20–30 gallon overlap, where the shorter 13.7-inch body matters more than the 207's extra media capacity and circulation

9Score

What we like

• Fluval rates it for 10–30 US Gal aquariums
• 145 US GPH Pump Output and 95 US GPH Filter Circulation are published separately
• 1.2 L basket volume in a 13.7-inch-tall body
• Same 7.5 x 7-inch footprint, 10W draw and 4.75 ft maximum head as the 207
• Shared 07 Series pre-filter and media-tray architecture

What we don't

• 30-gallon upper manufacturer limit is lower than the 207's 45 gallons
• 1.2 L basket volume is smaller than the 207's 1.8 L
• 95 GPH Filter Circulation is lower than the 207's 121 GPH

Fluval identifies the current 107 as item A440 / UPC 015561104401 for 10–30 US Gal / 40–130 L aquariums. The manufacturer publishes 145 US GPH Pump Output and, separately, 95 US GPH Filter Circulation at 120V/60Hz. Those are manufacturer specifications, not PetGearReport measurements.

The 107 provides 1.2 L of basket volume, 2.0 L total chamber volume and 3.9 L canister volume. Its 120V power draw is 10W, maximum head pressure is 4.75 ft / 1.45 m, and the body is 7.5 x 7 x 13.7 inches.

Product identity evidence checked September 25, 2026: B07JGLN6XC matched Fluval 107 / model A440 / UPC 015561104401, without freezing current Amazon price or availability. In the shared 20–30 gallon overlap, the 107 is the shorter option when its published capacity already meets the aquarium's needs.

Choose the 107 when its 10–30 gallon envelope already covers the aquarium and the shorter 13.7-inch body is more valuable than the 207's extra media capacity and circulation.

Check price on Amazon →

#2Best for extra media & circulation

Fluval 207 Performance Canister Filter

Best for: 20–45 gallon setups that benefit from more media volume or higher documented filter circulation and have enough vertical cabinet clearance

9Score

What we like

• Fluval rates it for 20–45 US Gal aquariums
• 206 US GPH Pump Output and 121 US GPH Filter Circulation are published separately
• 1.8 L basket volume and 3.1 L total chamber volume
• Same 7.5 x 7-inch footprint, 10W draw and 4.75 ft maximum head as the 107
• Larger 803 cm² vertical pre-filter area

What we don't

• 16.5-inch height is 2.8 inches taller than the 107
• Extra media capacity is unnecessary if the 107 already covers the aquarium and filtration plan
• Maximum-head specification does not increase over the 107

Fluval identifies the current 207 as item A443 / UPC 015561104432 for 20–45 US Gal / 60–220 L aquariums. It publishes 206 US GPH Pump Output and 121 US GPH Filter Circulation at 120V/60Hz.

The 207 increases basket volume to 1.8 L, total chamber volume to 3.1 L and canister volume to 5.3 L. Its vertical pre-filter area rises to 803 cm². The 10W power draw, 4.75 ft / 1.45 m maximum head and 7.5 x 7-inch footprint remain the same as the 107; height rises to 16.5 inches.

Product identity evidence checked September 25, 2026: B07JHG13WP matched Fluval 207 / model A443 / UPC 015561104432, without freezing current Amazon price or availability. The 207 is the stronger fit when the aquarium or media plan benefits from that additional documented capacity; it is not automatically the better purchase for every tank in the shared range.

Choose the 207 when the larger 20–45 gallon envelope, 1.8 L basket volume or 121 GPH Filter Circulation solves a real sizing or media-capacity need.

Check price on Amazon →

How we researched and scored

PetGearReport has not physically tested the Fluval 107 or 207, measured their installed water flow, noise, priming behavior, debris capture or long-term durability. We compared current Fluval specifications, model identity, aquarium range, same-name hydraulic labels, media capacity, dimensions, power draw, head-pressure limits, maintenance architecture, replacement-parts documentation and current public product-identity evidence. Amazon pricing, temporary availability and customer-star ratings were not scoring inputs.

The displayed 1–10 number is a PetGearReport research score, rounded to the nearest whole number from the same five weighted categories for both filters:

• Tank fit & hydraulic documentation — 25%: exact aquarium range and clarity of Pump Output and Filter Circulation specifications.
• Media capacity & architecture — 25%: basket, chamber and canister volume plus the shared 07 Series pre-filter/media-tray design.
• Cabinet fit & installation — 20%: footprint, canister height and practical service access.
• Energy & hydraulic headroom — 15%: 120V wattage and maximum head-pressure allowance considered together rather than treating either as an automatic advantage.
• Documentation & parts support — 15%: current official model pages, item/UPC traceability, manuals and replacement-part support.

Both round to 9/10 because they share a well-documented platform and solve adjacent sizing needs. The 107 appears first because the central decision on this page is the 20–30 gallon overlap, where its shorter body can be the cleaner fit when the additional 207 media capacity and circulation are not needed. The 207’s slightly higher weighted result reflects additional capacity, not a universal performance win.

Quick verdict

Choose the Fluval 107 when the aquarium is inside its 10–30 gallon range and the 1.2 L basket volume and 95 GPH Filter Circulation already meet the setup. It occupies the same 7.5 x 7-inch footprint as the 207 but is only 13.7 inches high.

Choose the Fluval 207 when the aquarium is closer to or above the 107’s upper limit or the filtration plan benefits from 1.8 L of basket volume and 121 GPH Filter Circulation. The footprint, 10W draw and 4.75 ft maximum head do not change; height rises to 16.5 inches.

Fluval 107 vs 207 at a glance

The two filters are directly comparable on Pump Output and directly comparable on Filter Circulation, because Fluval uses the same labels for both models. But pump output and filter circulation are different specifications and should not be mixed into one ranking number.

What changes when you move from 107 to 207

Inside the 20–30 gallon overlap, the 207 is justified only when the extra media volume, documented circulation or larger aquarium envelope solves a real requirement. The 207 does not add maximum-head allowance, lower power draw or a smaller cabinet footprint; it adds capacity and height.

The 20–30 gallon overlap is the real decision zone

The 107 is rated for 10–30 gallons, while the 207 is rated for 20–45 gallons. That creates a 20–30 gallon overlap where either model falls inside Fluval’s current manufacturer envelope.

Inside that overlap, “buy the bigger filter” is not a complete decision rule. The 207 adds 0.6 L of basket volume, 26 GPH of published Filter Circulation, 1.1 L of total chamber volume and 1.4 L of total canister volume. It does not add published maximum-head pressure, wattage or cabinet-floor footprint. Its principal physical cost is height: 16.5 inches versus 13.7 inches.

If those additional media and circulation specifications solve a real filtration requirement, the 207 makes sense. If they do not, the 107 gives you the same 07 Series architecture in a shorter body.

For broader sizing context, use our aquarium filter size guide. It explains why manufacturer range and model-specific hydraulic documentation are more useful than treating one generic turnover ratio as a universal rule.

Pump Output vs Filter Circulation

Fluval publishes two hydraulic numbers for each filter. For the 107, Pump Output is 145 US GPH while Filter Circulation is 95 US GPH. For the 207, Pump Output is 206 US GPH while Filter Circulation is 121 US GPH.

Compare 145 versus 206 when discussing Pump Output. Compare 95 versus 121 when discussing Filter Circulation. Do not compare one model’s pump-output figure with the other model’s filter-circulation figure and infer performance from the larger number.

PetGearReport has not measured installed flow for either model. Real system behavior can vary with media condition, hose routing, head height and maintenance state.

Media capacity and the shared 07 Series architecture

Both models use the same basic 07 Series flow path, with a vertical mechanical pre-filter before water moves through the media trays. The 207 scales that architecture upward rather than changing the basic filtration concept.

The 107 publishes 1.2 L basket volume, 2.0 L total chamber volume and 3.9 L canister volume. The 207 increases those figures to 1.8 L, 3.1 L and 5.3 L respectively. Its vertical pre-filter area also increases from 514 cm² to 803 cm².

More media volume can be useful when you need more mechanical, biological or optional chemical-media capacity, but volume alone does not replace correct media selection or maintenance. Our aquarium filter media guide explains the role of each media type and why the actual flow path matters.

Same footprint, different cabinet height

Both models have a 7.5 x 7-inch footprint. The 107 is 13.7 inches high and the 207 is 16.5 inches high, a 2.8-inch difference. That makes vertical service clearance the key physical distinction rather than cabinet-floor area.

Power draw and published maximum head are ties in Fluval’s current specifications: both are 10W at 120V/60Hz and both publish 4.75 ft / 1.45 m maximum head. The 207 should therefore be justified by its larger aquarium envelope, media capacity or higher documented circulation—not by claims of lower power or greater maximum head.

Check the real cabinet, hose route and service clearance before ordering. Nominal aquarium size alone does not prove that the taller model is necessary or that it will fit comfortably.

Which one should you buy?

Choose the Fluval 107 if:

• the aquarium is inside the 10–30 gallon manufacturer range;
• you are specifically in the 20–30 gallon overlap and do not need the 207’s extra media capacity;
• a 13.7-inch canister gives useful vertical service clearance;
• 1.2 L of basket volume fits the media plan;
• the shared 10W draw and 4.75 ft head specification mean the larger model offers no benefit on those metrics.

Choose the Fluval 207 if:

• the aquarium is above 30 gallons or you want the 20–45 gallon manufacturer envelope;
• 1.8 L of basket volume is useful for the planned media load;
• the setup benefits from 121 GPH published Filter Circulation;
• the cabinet safely accommodates a 16.5-inch canister plus service clearance;
• the additional capacity is useful enough to justify the extra height.

If you need the next 07 Series size, continue to our Fluval 207 vs 307 comparison, then Fluval 307 vs 407 for the next overlap. To compare these models with other canister filters, use our best aquarium canister filters guide. For the broader architecture decision, see best aquarium filters.

Exact product identity verification

Product identity evidence checked September 25, 2026: B07JGLN6XC matched Fluval 107 / model A440 / UPC 015561104401 and B07JHG13WP matched Fluval 207 / model A443 / UPC 015561104432, without freezing current Amazon price or availability. The manufacturer model/UPC records and public marketplace identity evidence keep the affiliate destinations tied to the intended 07 Series models. No direct Amazon product-page probe was used for this refresh.

Sources

• Fluval — 107 Canister Filter — item A440, UPC 015561104401, aquarium range, Pump Output, Filter Circulation, media volumes, head pressure, wattage and dimensions.
• Fluval — 207 Canister Filter — item A443, UPC 015561104432, aquarium range, Pump Output, Filter Circulation, media volumes, head pressure, wattage and dimensions.
• Fluval — 07 Series — shared architecture, current model lineup and comparison specifications.