Our take
Penn-Plax's 2025 catalog identifies SBK108 as a SpongeBob Betta Tank Kit with a listed 0.7-gallon capacity and names a tank, lid, top decoration and background. CountryMax independently uses the SBK108 code and UPC. The frozen historical row shares that code but also specifies an orange bow-tank variant and an old ASIN; no source connects that ASIN to a current exact offer. This is a model-level comparison profile, with material and powered equipment left unknown. It does not assess whether the tank is suitable for housing any particular animal.
A shopper comparing the licensed SpongeBob appearance and listed kit contents in a sub-gallon format who will verify the current material and box contents..
It is not a verified ten-gallon option, a confirmed glass or acrylic tank, a documented filter or lighting package, or a current exact Amazon item match. This review is not a livestock suitability recommendation.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Penn-Plax names SBK108 and its 0.7-gallon / 2.65-liter listing in the 2025 catalog.
- The catalog lists the tank, lid, top decoration and background as kit contents.
- CountryMax independently identifies SKU SBK108 and UPC 030172092039.
What to weigh up
- The listed capacity is well below the finder's about-ten-gallon minimum.
- The catalog does not state tank material, filtration, lighting, pump or heater.
- The maker and retailer dimensions differ, and the frozen orange variant and ASIN are not crosswalked to a current offer.
The key details
| Model covered | SBK108 |
|---|---|
| Listed Capacity | 0.7 US gal / 2.65 L, catalog-listed |
| Tank Construction | Tank material is not stated in the catalog |
| Documented Package Feature | Tank, lid, top decoration and background are listed |
Performance figures are manufacturer claims. Source checked October 9, 2026. Regional models and included accessories can differ.
What the features mean for you
A named model, with a separate historical-ASIN question
Penn-Plax's 2025 catalog names SBK108 as a SpongeBob Betta Tank Kit and lists its capacity as 0.7 US gallons / 2.65 liters. CountryMax independently lists SKU SBK108 and UPC 030172092039 under the same product name, supporting a specific model identity. The historical candidate row uses the same model clue but adds orange and bow-tank wording plus ASIN B01654VY0Y. The available sources do not tie that frozen variant and ASIN to a current exact Amazon product. This guide describes the named SBK108 model without treating historical catalog data as proof of present inventory or a seller's current box.
The 0.7-gallon class drives the capacity match
The maker's listed 0.7-gallon / 2.65-liter value places SBK108 below the finder’s about-ten-gallon minimum. A shopper requiring a ten-gallon class or larger will not receive it in that path. When capacity is flexible, it remains visible alongside the other reviewed models so the small licensed format can be compared on its own terms. The source gives a nominal listing figure, not a measured usable-water amount after any setup. The finder does not infer an animal stocking plan from the product's Betta name, and a flexible answer should not be read as approval of this capacity for livestock.
The listed contents describe the decorative angle
Penn-Plax lists a tank, lid, top decoration and background for SBK108. Those are useful package details for someone comparing the licensed character presentation and the parts the maker names. Neither the catalog nor the frozen title proves that every current seller ships that same set, so check the actual box list before purchase. The catalog's item entry does not list gravel, plants, filtration media, a pump, heater or light. Their absence from that entry is a documentation limit, not proof that no seller package could include them. Compare exact model code and package contents rather than relying on a product photo.
Construction and measurements need seller confirmation
The catalog page identifies the kit and its contents but does not state the tank material. It lists dimensions of 6.5 inches high by 11.4 wide by 4 deep. CountryMax lists 6.5 by 10.75 by 3.5 inches, without explaining whether it measures a different part or version. Keep both source statements visible and do not choose one as a confirmed footprint. Because material is not documented, SBK108 cannot satisfy a hard glass-only or acrylic-only preference. Measure the exact unit and ask the seller about material before arranging a shelf or comparing it with glass and acrylic models.
The product name does not establish powered equipment
The maker catalog's SBK108 entry lists decorative package pieces, but it does not identify a filter, light, pump or other powered equipment. A shopper who wants a documented filtration system should choose another researched profile whose sources name that equipment. The finder does not treat a background, lid or character decoration as a filter or sump. It also leaves lighting unknown rather than inferring illumination from product photographs. Confirm the current seller's exact itemization if a filter or light matters; this guide makes no performance, maintenance-interval or animal-care claim.
How SBK108 compares with other small models
SBK108's source-listed 0.7-gallon capacity is smaller than the Penn-Plax BBT8's maker-listed one-gallon class and Marina CUBUS 13485's 0.9-gallon class. Those are different model codes with different documented features: BBT8's catalog lists a two-color LED and feeder, while Marina's sources identify a glass cube, cover, base and clip-on LED. SBK108's source instead lists a top decoration and background. UP Aqua UA-001B has an approximately two-gallon low-iron glass listing. These differences help compare size, construction and package evidence; they do not rank livestock suitability.
Use the flexible path only for a model comparison
SBK108 is included when capacity, construction, filtration and placement are flexible, because its model identity is supported and its unknowns are stated. It is excluded from the ten-gallon minimum and from glass-only or acrylic-only results because the listed capacity is below the threshold and material is unknown. Its catalog does not document a sump, so it does not pass a sump-required answer. These are literal consequences of the saved profile values, not judgments about whether a decorated nano kit meets a buyer's animal-care needs. The category's ordinary comparison can show the model while the review makes the limits clear.
Search by model and verify the exact box
The affiliate link searches Amazon for Penn-Plax SBK108 and carries the buyershortlists-20 tag. It is a model search, not a direct link to frozen ASIN B01654VY0Y. Search results may use different wording, images or package contents; confirm the SBK108 code, capacity, tank material, dimensions, and included equipment on the current seller page. The sources do not establish current price, stock, condition, seller, return terms or a live Amazon variant. If the orange bow shape is essential, ask for a photo of the model label and contents before treating a result as the same version.
What else to compare
For a source-documented glass cube with a clip-on LED, compare Marina CUBUS 13485, whose listing is 0.9 US gallons and whose filtration remains undocumented. For an approximately two-gallon glass option, compare UP Aqua UA-001B; its saved listing does not establish a filter or light.
Before you buy
What capacity does Penn-Plax list for SBK108?
The 2025 catalog lists 0.7 US gallons / 2.65 L. That is a catalog figure, not a measurement of usable water after setup.
What does the catalog list in the kit?
Penn-Plax lists a tank, lid, top decoration and background. Confirm the exact current seller box; the sources do not document powered equipment.
Is the tank glass or acrylic?
The cited SBK108 catalog entry does not state its material. The finder leaves the material unknown instead of inferring it from a photograph.
Does the frozen Amazon ASIN prove the current orange variant?
No. The historical row shares the SBK108 clue, but no source maps its orange/bow wording or old ASIN to a current exact Amazon offer.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Penn-Plax 2025 catalog, licensed Betta Tank Kits, page 82; CountryMax model and UPC cross-check ↗ — checked October 9, 2026.
- Penn-Plax 2025 catalog, printed page 82, SBK108 name, 0.7-gallon / 2.65-L listing, dimensions, tank, lid, top decor and background ↗ — checked October 9, 2026.
- CountryMax SBK108 listing, product identity and UPC at lines 720–778, package and conflicting dimensions at lines 783–790 ↗ — checked October 9, 2026.
The decision
SBK108 is a maker-named 0.7-gallon SpongeBob kit with a listed tank, lid, top decoration and background. Its material, powered equipment, conflicting dimensions and frozen ASIN variant remain unresolved. Use the tagged model search only after checking the seller's exact label and contents; the review does not assess livestock suitability.
Is it the right fit?
Check the exact model and today’s offers on Amazon.