- Sku: PEN20G-TANK
Tideline AIO Aquarium 20.5G Peninsula
Tideline AIO Aquarium 20.5G Peninsula is a compact all-in-one aquarium in Tideline's second-generation (G2) design. The filtration chamber sits at one end of the tank instead of along the back, and it uses Tideline's Flow Matrix modular system, so media baskets, filter cups, and filter socks can be swapped to set up filtration your way. Low-iron glass on the front and side viewing panels keeps the view clear. It comes with a return pump, a return nozzle, a Flow Matrix Nano Kit, and a leveling mat. Add a matching Tideline cabinet stand, or run it on a stand you already own. Browse all aquarium systems.
What's Included
- AIO Peninsula tank: about 20.5 gallons, 6mm glass, low-iron front and side panels, built-in filtration chamber at one end.
- Return pump: Tideline WH-1000, 300 GPH.
- Return nozzle: a single 3/4 in return nozzle.
- Flow Matrix Nano Kit: with a 3 in mesh filter sock.
- Leveling mat: cushions and levels the tank on your stand.
A light and heater are not included, so you can pick the gear you prefer.
Choose Your Stand
Pick a configuration from the drop-down above:
| Tank Only | The 20.5G Peninsula AIO and its included accessories, no stand. |
| Artika Stand | The tank plus Tideline's 20.5G Peninsula AIO cabinet stand in Black, Gray, Natural, or White Artika. |
| Walnut Stand | The tank plus Tideline's 20.5G Peninsula AIO cabinet stand in Walnut. |
Stand photos show the cabinet on its own.
Specifications
| Brand | Tideline |
| Model | Peninsula 20 AIO G2 |
| Volume | About 20.5 gallons |
| Dimensions | 23.625 in L x 12.8 in W x 15.75 in H |
| Glass | 6mm, low-iron front and side panels |
| Filtration | Built-in AIO chamber with Flow Matrix modular filtration |
| Return pump | Tideline WH-1000, 300 GPH |
| Return | Single 3/4 in nozzle |
| Mechanical filtration | Flow Matrix Nano Kit with 3 in mesh sock |
| Leveling mat | Included |
| Stand | Optional Artika (Black / Gray / Natural / White) or Walnut |
| Availability | In-store pickup |
Related Tanks
- Tideline AIO Aquarium 47G Lagoon: the larger, wide and shallow Lagoon AIO.
- All aquarium systems: compare other all-in-one tanks.
FAQ
What is an AIO tank?
All-in-one. The filtration lives in a built-in chamber instead of a separate sump under the tank. Just add a light, a heater, and your media.
What comes in the box?
The tank, a Tideline WH-1000 return pump (300 GPH), a 3/4 in return nozzle, a Flow Matrix Nano Kit with a 3 in mesh sock, and a leveling mat.
Does it come with a stand?
Only if you choose a stand option: one of the four Artika colors or Walnut. Tank Only is the aquarium and its included accessories, no stand.
How big is it?
23.625 in long, 12.8 in wide, 15.75 in tall, holding about 20.5 gallons.
Can I have it shipped?
No. Aquariums and stands are available for in-store pickup only.
Have a question?
Tideline AIO Aquarium 20.5G Peninsula
