Best 1 Gallon Aquarium Filters for Betta Tanks
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A 1 gallon aquarium filter is rarely sold on its own, because at this size the filter is usually hidden inside the tank kit. That is why this guide compares seven small kits from their listings, looking at the filter each one includes, the tank volume, the power it needs and what the seller says about upkeep. The kits here run from 1 gallon to 1.5 gallons, with one listing that gives conflicting numbers. Read the notes on power adapters and flow before you buy, because those are the details that cause most problems in a tank this small.
Quick answer
- For a filter that is clearly described, look at the DaToo (42 GPH side filter) or the iPriro (250 L/H hang-on-back, 2.5W).
- For a glass tank with a hang-on-back filter that keeps the swimming space open, look at the Craftsboys or iPriro kits.
- Several USB-powered kits do not include a power adapter; check the 5V rating the listing asks for.
- Every filter here still needs regular cleaning, and small tanks still need regular water changes.
How to choose a filter for a tank this small
At 1 to 1.5 gallons, the filter takes up a real share of the tank. The AQUANEAT 1-gallon listing says that once the filter section is deducted, the usable volume is about 0.8 gallons. So the first question is how much of the advertised volume your fish will actually get. Check whether the filter is hidden in a side chamber, hung on the back, or placed inside the tank.
The second question is flow. Bettas have long fins and, in the words of the Aquarium Co-Op betta care guide, need gentle filtration, with a sponge filter or a filter with adjustable flow suggested. Strong currents can damage long fins. Kits that list adjustable flow, such as the Craftsboys, iPriro, DaToo and Novique, give you a way to turn it down. The AQUANEAT listings go further and suggest adding a pre-filter sponge or decorations at the intake to soften suction.
The third question is power. Many of these kits run the pump and light from USB. Several listings state that the adapter is not included, and give the rating they want. If you plug in a weaker adapter, the listing for the 1.2-gallon AQUANEAT warns the light or pump may not work. Check what you already own before ordering.
The fourth question is upkeep. A filter does not remove the need for water changes. The 1-gallon AQUANEAT listing says plainly that regular water changes are required and that the tank does not support zero-maintenance use. Treat any claim of self-cleaning as meaning the filter helps, not that you can stop looking after the tank.
Side-by-side summary
| Kit | Listed volume | Size (in) | Material | Filter as listed |
|---|---|---|---|---|
| AQUANEAT HJ-111F | 1.2 gal | 8 x 5.25 x 7 | Acrylic | Sponge and water filter, USB powered |
| AQUANEAT PFT-010 | 1 gal (about 0.8 usable) | 7.9 x 5.9 x 5.9 | Plastic | Hidden filter, sponge and adjustable pump |
| DaToo DTBFT-1 | 1 gal | 7.8 x 5.8 x 6 | Plastic | Side filter, 42 GPH, 3W adjustable pump |
| Novique NVFT-108 | 1 gal | 7.9 x 5.7 x 5.9 | Acrylic | Filter sponge and adjustable silent pump |
| Craftsboys CB-FT-15 | 1.5 gal | 6.29 x 6.29 x 8.66 | Glass | 3W hang-on-back, adjustable flow |
| iPriro IP130-B | 1.5 gal | 6.3 x 6.3 x 8.67 | Glass | Hang-on-back, 2.5W, 250 L/H, adjustable |
| 1.8 gal kit (Starter Kit 02) | 1.8 in title, 1.5 in specs | 11.8 x 7.1 x 7.3 | PET plastic or polycarbonate | Silent pump, hydroponic basket |
The seven kits, one by one
AQUANEAT 1.2 Gallon Starter Kit (HJ-111F)
The AQUANEAT 1.2-gallon kit is the one to look at if you want a small acrylic tank with a filter and a light already in the box. The listing gives the size as 8 x 5.25 x 7 inches and the weight as 0.87 kg, so it is light enough to move to a new spot on a desk or kitchen counter without fuss. The kit contains one sponge, one water filter, a 5V USB power cord and two artificial plants. The listing says the filtration reduces how often you have to change water, and it names a single betta, a couple of shrimp, snails or a small goldfish as suitable residents.
The most important detail is the power note. The listing says no USB power adapter is included and that the tank needs an adapter rated at 5V and 2A or more; an adapter that is too weak may stop the light or the pump from working. It also says the pump must be fully submerged to work, and that if the flow drops you should remove the pump, clean it and reinstall the impeller and shaft. If the current feels strong for a betta, the listing suggests putting a pre-filter sponge on the intake. That is a useful tip for any small filter, because bettas with long fins do not need strong flow.
AQUANEAT 1 Gallon Betta Tank (PFT-010)
This is the smallest tank in the group, and the listing is open about what that means. The size is 7.9 x 5.9 x 5.9 inches, and after the filter section is deducted the listing says the usable volume is about 0.8 gallons, shrinking further once you add substrate. It is presented for a single betta, a few shrimp, snails or a tiny goldfish, and also as a hospital or quarantine tank or desktop decor.
The filter is hidden, and the kit includes a filter sponge, an adjustable water pump and an LED hood with three colors and ten brightness levels. A top feeding hole lets you feed without lifting the lid, and four silicone feet keep it stable and quiet. The listing is direct about upkeep: clean the filter sponge and pump regularly to avoid clogging, and regular water changes are required because this small tank does not support zero-maintenance use. The light needs a power transformer that is not included; compatible ones are 5V at 0.5A, 1A, 1.5A or 2A. If the pump pulls too hard, the listing recommends placing decorations at the water inlet to soften the suction.
DaToo 1 Gallon Fish Tank (DTBFT-1)
DaToo describes this as an all-in-one side-filter nano tank. The size is 7.8 x 5.8 x 6 inches and the body is plastic. What sets it apart in this group is the filter detail the listing gives: a hidden side filter with a 42 GPH pump, extra-thick filter cotton and an adjustable 3W pump, with the listing saying it handles filtration, oxygenation and wave making together.
The LED cover has three color modes and ten brightness levels, and it needs a regular 5V transformer that is bought separately; the listing says it does not support fast-charging adapters. There is a feeding hole in the top and a reserved wiring slot that the listing says also reduces evaporation. The listing mentions a 4 mm safety suction port and a thick impact-resistant PS plus ABS body. For a buyer who wants a tank that lists its pump flow, this is the clearest of the 1-gallon options.
Novique 1 Gallon Mini Aquarium (NVFT-108)
The Novique kit is an acrylic 1-gallon tank measuring 7.9 x 5.7 x 5.9 inches. The listing describes a one-box solution: tank, LED lights, feeding port, anti-slip base, filter sponge and an adjustable silent water pump, with the equipment tucked into a black recess so the filtration, circulation and oxygenation are hidden from view.
The lid has a raised-edge flap feeding port that the listing says opens with one finger, and the lighting offers day, night and warm white modes with ten brightness levels. The base has anti-slip beads in the four corners. The spec sheet lists acrylic as the material and describes the tank as transparent. The listing text does not name a betta, so treat this as a small tank with a filter and confirm the stocking suits your fish before you buy.
Craftsboys 1.5 Gallon Nano Glass Kit (CB-FT-15)
This is a glass tank with a clearly stated filter: a 3W hang-on-back unit with adjustable flow. The size is 6.29 x 6.29 x 8.66 inches, the glass is 4.2 mm thick, and the weight is 2.17 kg. The kit adds a 3W COB LED light, decorations and a fish care guide. The spec sheet lists betta as the target species.
The seller recommends it to beginners in the aquascape hobby and also for small fish in general. A hang-on-back filter keeps the equipment out of the swimming space, which matters in a tank this size, and the adjustable flow is a good fit for a fish with long fins. The listed warranty is one month, the shortest in this group, so read the return terms before you buy.
iPriro 1.5 Gallon Glass Betta Kit (IP130-B)
The iPriro kit is also a glass tank at 6.3 x 6.3 x 8.67 inches, with 4 mm glass, a black back panel and a black EVA base. The listing names betta, guppies and angelfish as suitable, and includes LED lighting, a hanging filter and a lid.
The filter numbers are given: AC110V at 60Hz, 2.5W, 250 L/H, with adjustable flow, and the listing says to fill the filter with water before every start-up. The clip-on lamp is listed at 8W and 450 lumens, full spectrum, and the listing says it suits aquatic plants. The warranty is one year from the manufacturer, and the listing says that if the tank arrives damaged the seller will refund or replace it. Among the glass options this one lists the most filter and light detail.
1.8 Gallon Betta Tank Kit with Hydroponic Basket (Aquarium Starter Kit 02)
The largest kit here has a volume of 1.8 gallons in the title and 1.5 gallons in the spec sheet, so the listing disagrees with itself; the bullet gives the size as 11.8 x 7.1 x 7.3 inches. It is described as PET plastic in the bullets and polycarbonate in the spec sheet, and weighs 1.27 kg.
The kit ships with a tank, a silent pump, a tricolor LED light and a cover with a hydroponic basket. The listing says the basket is for aquatic and semi-aquatic plants that take up ammonia, nitrites and nitrates. The light is USB powered with the adapter not included. The listing says the tank is designed for cold-water species such as bettas; do not read that as permission to skip a heater, because the care source linked below says a betta heater is required and that the fish prefer about 80°F. The listing also advises washing every component and letting it dry before use.
Who each kit suits
If you want the smallest footprint and accept a roughly 0.8-gallon usable volume, the 1-gallon AQUANEAT is the honest listing about its limits. If you want pump flow figures in the listing, the DaToo and the iPriro give them. If you prefer glass and a hang-on-back filter that keeps the interior clear, the Craftsboys and iPriro fit that. If you want the widest footprint and a plant basket, the 1.8-gallon kit has the longest base, at 11.8 inches.
If you already know your power setup, the USB kits are simple. If you do not, buy the adapter at the same time, because the AQUANEAT listings and the DaToo listing all say that the light needs a separate transformer or adapter.
Mistakes to avoid with a small filter
- Running the pump dry. The 1.2-gallon AQUANEAT listing says the pump has to be fully submerged.
- Skipping the first rinse. The 1.8-gallon kit listing advises washing every component and letting it air-dry before use.
- Forgetting to prime. The iPriro listing says to fill the filter with water before every start-up.
- Ignoring a drop in flow. The AQUANEAT listing says to remove the pump, clean it and reinstall the impeller and shaft when flow falls.
- Treating a filter as a replacement for water changes.
Warmth still matters
None of the 1 to 1.5 gallon listings above state that a heater is included. The Aquarium Co-Op betta care page says bettas prefer about 80°F and that a heater is required, and that typical room temperatures can leave them lethargic. A filter will not solve that. Plan separately for a heater and thermometer that fit the tank, and read the listing for any heater before assuming it fits a tank this small. Our guide to the 5-gallon tank question explains why many keepers move to a larger tank.
FAQ
Can I buy a 1 gallon aquarium filter separately?
The listings here are complete kits, with the filter built in. If you want a separate unit, the AQQA 2-10 gallon adjustable flow filter is reviewed on this site, but check that its stated range suits your tank volume before ordering.
Is a filter enough to skip water changes?
No. The 1-gallon AQUANEAT listing says regular water changes are required. The Aquarium Co-Op page gives water change amounts by tank size and notes that very small volumes need frequent changes, which it calls very stressful.
What if the flow is too strong for my betta?
Three listings give options. The AQUANEAT listings suggest a pre-filter sponge or decorations at the intake. The Craftsboys, iPriro, DaToo and Novique kits list adjustable flow. The Aquarium Co-Op page notes that strong currents can damage long fins.
Do these kits include a USB power adapter?
The 1.2-gallon AQUANEAT, the 1-gallon AQUANEAT, the DaToo and the 1.8-gallon kit all say the adapter or transformer is not included. Check each listing for the rating it asks for.
Is 1 gallon big enough for a betta?
The Aquarium Co-Op page says to use at least 5 to 10 gallons and discourages bowls. These small kits are listed by their sellers for a single betta, but the care source suggests a bigger tank where you can.
Why does one listing show two different volumes?
The 1.8-gallon kit gives 1.8 gallons in its title and 1.5 gallons in its spec sheet. Use the stated dimensions, 11.8 x 7.1 x 7.3 inches, to judge the space, and ask the seller before you rely on either number.
Bottom line
Pick the kit whose filter you can describe in one sentence, and whose power needs you already meet. For a hang-on-back filter in glass, choose between the Craftsboys and the iPriro. For the most detail on pump flow in a plastic tank, choose the DaToo. For the smallest tank, accept the roughly 0.8-gallon usable volume the AQUANEAT listing admits to. Whatever you pick, budget time for filter cleaning and regular water changes, and plan a heater separately. See also our Juilsioa 1.6-gallon starter kit review for another small-tank option.
