Aquael Fan 2 Plus Internal Aquarium Filter review

The current Aquael US table gives FAN 2 PLUS its own powered-filter item number, 120621, and a 25–35 US-gallon / 100–150-liter label. The exact row lists a 2.6 × 3 × 10-inch body, 5.7 W and an efficiency value of 120 US gallons per hour paired with 450 L/h. This range sits above FAN 1's 15–25 gallons and overlaps at 25; it also shares the 35-gallon edge with FAN 3. Those are actual model boundaries in the table, not recommendations for a particular fish load.

The middle-to-larger internal size

FAN 2 is the larger step when the tank's stated volume exceeds 25 gallons, with a listed output and body size distinct from the smaller sizes. The family page describes adjustable output, a directional outlet and an aeration option, and states that output can be changed with a top control. This gives the owner a way to aim and adjust the pump without removing the filter. It does not provide a documented minimum flow for current item 120621, and the one “efficiency” value is not an independent measurement of turnover after a sponge has been in use.

Use the size label as a boundary screen, then review the tank shape, fish behavior, intake protection, current preference and maintenance access. If the tank is exactly 25 or 35 gallons, the published ranges include another FAN size at the shared endpoint. The volume row alone does not say which of those two filters suits a given stocking plan. The maker has not supplied high-waste or fish-count guidance for this exact item, so the filter's upper endpoint should never be read as such a promise.

Internal installation and recurring care

FAN 2 attaches inside the aquarium using a holder and four suction cups; it does not need a stand cavity under the tank. In return, it uses interior space and puts the pump in the display. The 10-inch height is a practical clearance check, and the width/depth figures help place it beside decor or behind plants. Confirm that the glass panel allows the bracket to seat and that the filter can be removed for cleaning without dismantling the tank layout.

The manufacturer's English family manual says to unplug the filter before maintenance, lift the unit off its holder, open the sponge cartridge compartment and clean the rotor at least monthly. It recommends immersion at least 3 cm below the waterline for best effect and notes that evaporation lowers water level. These instructions describe the family rather than a version-confirmed current item package. The generic FAN 2 technical table lists 5.2 W and a 90–450 L/h output range. Current US item 120621 instead has a 5.7-W row and a single 120 US gal/h / 450 L/h listed-efficiency figure. The current US product line has no code crosswalk to the manual's electrical and flow table, so I have not used the older 5.2-W value or 90-L/h minimum as attributes of item 120621.

Replacement sponge and exact-package limits

A sponge is the filter medium, but Aquael does not report the medium's basket-equivalent volume in liters. Its source catalogs list replacement sponges sized to FAN models and separate CARBOMAX variants, which are not substitutes for identifying the current powered filter package. If your decision requires a stated 0.1-L or larger media basket, a high-waste claim or a known stocking limit, this documentation does not establish it for FAN 2.

Some adjacent images and older manuals show FAN 2 Plus with European electrical markings and different wattage. The current US family gallery's photo displays an older code 102369 and 230 V / 50 Hz / 5.2 W. That picture is useful for recognizing the model shape but not for verifying current US item 120621's supply rating or seller box. The current US table says 5.7 W, while voltage/frequency, UPC and exact included accessory list are not stated there. Verify the label and package before purchase. This is a source-based assessment, not a claim of hands-on operation.