Best Filters for Planted Aquariums and Plant Tanks
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An aquarium plant filter has two jobs in a small tank: keep the water clear and gentle enough that plants are not uprooted, and leave room for the plants themselves. The listings below are not stand-alone filter units. They are three starter kits that include a filter and two moss ball holders that the seller says help water circulate through a moss ball. This page compares what each listing states about filtration, size and plants, so you can pick the one that suits a small planted tank.
Quick answer
- For the smallest desk tank, the 2 gallon kit lists a waterfall filter pump, plants, gravel, rock and a lid.
- For a planter built into the tank, the 2.5 gallon TV-style kit lists a plant basket and a silent pump with mechanical filtration.
- For the biggest water volume, the 5 to 6 gallon Wonderfactory kit lists a hang-on-back filter with sponge and ceramic rings, plus a heater.
- For a gentle spot to hold moss, the hollow moss ball holders are sold in 2-pack and 3-pack versions.
What a plant tank asks of a filter
Plants and filters work together. A general reference on aquariums says live plants absorb nitrate as a nutrient and can take up ammonia as well, and that plant growth that is trimmed off takes those nutrients out of the tank. That does not replace a filter, but it explains why a filter in a planted tank does not have to do everything alone. What the filter should do is circulate water, catch debris and not blast the plants around. The listings below describe their filters in those terms, and where a listing says nothing, we say so.
Flow matters most for small tanks. Betta-style and shrimp tanks, which several of these listings name, tend to want calmer water. The moss ball holder listing even says the holder can act as a gentle filter baffle to reduce water current. Keep that in mind when you read the filter descriptions below.
How to choose
Start from tank size
The kits here are sized from about 2 gallons to 6 gallons. The 2 gallon kit measures 9.84 by 5.91 by 7.09 inches, the 2.5 gallon TV tank is listed as 30 by 20 by 20 cm, and the Wonderfactory tank is 15.6 by 7.8 by 11.7 inches and holds 5 to 6 gallons depending on decoration space. Smaller tanks make water changes quicker but leave less room for plants.
Filter type
The three kits use three different approaches. The 2 gallon kit says waterfall filter pump. The 2.5 gallon kit says a silent pump with mechanical filtration. The Wonderfactory says a hang-on-back filter with both mechanical and biological filtration, using sponge for debris and ceramic rings. The holders are not filters in the normal sense; the listing says the hollow design lets water circulate through the moss ball.
Where the plants go
Each listing has a different place for plants. The 2 gallon kit includes plant, gravel and rock. The TV tank has a built-in planter box for hydroponic plants, with pothos or bamboo given as examples. The Wonderfactory kit lists substrate sand and rocks and is described as a compact tank for betta. The holders give moss a fixed spot. Match the plant plan to the tank layout.
Heating and light
Only the Wonderfactory kit lists a heater, and the listing includes a COB light as well. The 2 gallon kit has a built-in light, and the TV tank has a 3-color adjustable LED. If you want a planted tank with a heater, only one listing here includes one.
The five picks
| Product | Size | Filter | Plants |
|---|---|---|---|
| 2 Gallon starter kit | 9.84 x 5.91 x 7.09 in | Waterfall filter pump | Plant, gravel, rock included |
| 2.5 Gallon TV kit | 30 x 20 x 20 cm | Silent pump, mechanical | Built-in planter box |
| Wonderfactory 5 to 6 gal | 15.6 x 7.8 x 11.7 in | Hang-on-back, sponge and ceramic rings | Substrate sand and rocks |
| Moss ball holder 2-pack | 1.96 x 1.10 in | Hollow holder | Holds moss balls and small plants |
| Moss ball holder 3-pack | 5.51 x 4.72 x 1.26 in package | Hollow holder | Holds moss balls and small plants |
2 Gallon aquarium starter kit with waterfall filter pump
This is the smallest and simplest kit. The listing says it includes a built-in light, a water filter pump, plants, gravel, a rock and a lid, and that the lid keeps fish from jumping out. It is described as suitable for small fish, shrimp or betta, and the material is glass with a black glass background. At 9.84 by 5.91 by 7.09 inches it fits a desk or office shelf. The listing does not give a flow rate, a filter media description or a heater, so if you need those, look at the larger kit. It is the pick for someone who wants a ready-made small plant scene and nothing else.
2.5 Gallon retro TV fish tank kit with planter
The TV tank is the unusual one. The listing says the tank is television-shaped, 30 by 20 by 20 cm and 2.5 gallons, made of ABS, and comes with LED lights, a filter and a plant planter. The 3-color LED switches between blue, white and daylight modes. The built-in planter box is for hydroponic plants, with pothos and bamboo as examples, and the listing claims this helps filter the water and extends water change cycles to two to three weeks. We cannot confirm that claim beyond the listing, so take it as the seller’s statement. The filtration system is a silent pump with mechanical filtration, and the listing says the tank suits small tropical fish such as fighting fish, cold water fish such as goldfish, or small aquatic plants. The kit has four items. If you like the idea of growing a plant above the waterline, this is the one that includes a basket for it.
Wonderfactory 5 gallon aquarium set with hang-on-back filter
This is the most complete kit, and the only one that lists a heater. The listing says it comes with a 6 gallon glass tank, a heater, a hang-on-back filter with media, a COB light, substrate sand, rocks and a 5-in-1 cleaning tool set. The glass is 5 mm thick with 92 percent light transmittance, and the tank holds 5 to 6 gallons depending on decoration space. The filter provides both mechanical and biological filtration, with sponge for debris and ceramic rings. The listing carries a safety reminder: do not bury the heater in sand or substrate, keep at least 2 inches of clearance from the water surface, make sure it is fully submerged before plugging in, and unplug it and let it cool for 10 to 20 minutes before removing it. Follow those steps from the listing, and if you are unsure about electrical safety, ask a qualified electrician. It weighs 8.38 kg. This is the kit for anyone who wants a real filter and a heater in a compact planted betta tank.
Moss ball holder, 2-pack, hollow design
This is a small accessory, not a filter. The listing says the holder keeps moss balls, such as Java moss, Marimo and Christmas moss, and other aquatic plants in place so they do not float or get pushed by fish. The hollow structure lets water circulate through the moss ball, which the listing says supports natural filtration and cleaner water for shrimp and fish. It can also anchor small plants, serve as a hiding spot for baby shrimp or shy fish such as bettas, and act as a gentle filter baffle to reduce current. It is made of non-toxic plastic that the seller says is aquarium-safe, brown in color, stackable, and 1.96 by 1.10 inches. A 2-pack suits one small tank.
Moss ball holder, 3-pack, hollow design
The 3-pack carries the same listing text and the same compact size. It comes in a clear color, with a package size of 5.51 by 4.72 by 1.26 inches and a weight of 2.72 ounces. Choose the 3-pack if you want a holder for each of several moss balls or if you plan to place one near a filter outlet to soften the current.
What we left out
The pack for this keyword also included three aquarium lights. They are lamps, not filters, so we left them out of the comparison. If lighting is your next question, our guide to picking a planted aquarium light is the place to continue.
Mistakes to avoid
- Expecting a kit filter to suit any tank. Each listing sizes its filter to its own tank.
- Treating the moss holder as a filter. The listing calls it a holder with a filtering effect, not a filter unit.
- Burying the heater. The Wonderfactory listing warns against it.
- Believing every claim in a listing. The two to three week water change claim for the TV tank is the seller’s statement.
- Overstocking a tiny tank. A 2 gallon tank leaves little room for fish and plants together.
Which one fits you
If you want a kit and a pre-planted scene in the smallest space, the 2 gallon option fits. If you want a planter above the water, the TV tank fits. If you want a hang-on-back filter and a heater in a glass tank, the Wonderfactory kit is the one. If you already own a tank and only want a calm place for moss, one of the holder packs is the cheaper step. For filters in general, see our guides on betta aquarium filters compared by flow and what to do when the filter current is too strong.
FAQ
Do plants replace a filter?
The reference we read says plants absorb nitrate and take up ammonia, but it also describes regular water changes as the usual way to keep nitrate down. The listings above all include a filter or pump, so treat plants as a helper.
Which kit has a heater?
Only the Wonderfactory 5 to 6 gallon kit lists a heater. The 2 gallon and 2.5 gallon kits do not.
Is the moss ball holder a filter?
The listing calls it a holder with a hollow design that lets water pass through the moss. It also says it can act as a gentle baffle. It does not describe a motor or media.
Can I keep a betta in these tanks?
The 2 gallon kit and the TV kit name betta or fighting fish in their listings, and the Wonderfactory kit is described as a betta tank. If you are unsure about stocking or health, ask a vet who treats fish.
How do I keep a filter from blowing plants around?
The only flow-control tip in the listings is the moss holder acting as a baffle. For other cases, see the linked guide on strong filter current.
How big is the biggest tank?
The Wonderfactory tank is the largest, listed at 15.6 by 7.8 by 11.7 inches and 5 to 6 gallons.
Bottom line
Choose by tank size and whether you need a heater: the Wonderfactory kit for a real hang-on-back filter plus heater, the 2.5 gallon TV kit for a built-in planter, the 2 gallon kit for the simplest desk scene, and the moss holders as a cheap add-on for calmer water around moss.
Sources
Aquarium (Wikipedia): heating, nitrogen cycle and live plants
