Quick Summary
The Aqua One PLATFORM 21 is a 40 cm, 21 L aquarium fish tank with touch-controlled LED lighting, a removable glass lid and a 2-stage filter. It is described as suitable for coldwater, temperate or tropical fish, with a heater sold separately.
The main buying checks for this tank are the 40 cm size, the 21 L capacity and whether the included lighting and filtration setup match the way you want to keep and view the aquarium.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Aqua One. |
| Product type | Aquarium fish tank. |
| Size | 40 cm long, so the available space needs to suit the tank length. |
| Capacity | 21 L. |
| Lighting | Touch controlled LEDs with white and blue lighting, plus a separate blue night-time viewing setting. |
| Filtration | 2-stage filter with an easy clean cartridge and sponge filtration system. |
| Lid | Fully removable glass lid for easier cleaning access. |
| Heater | Heater sold separately. |
What to Compare Before Buying
- Tank size: The 40 cm length and 21 L capacity are the main space and volume checks.
- Lighting setup: Compare the touch-controlled white and blue LEDs with the viewing effect you want.
- Filtration: Check whether the 2-stage filter and replaceable cartridge arrangement suit your maintenance preference.
- Heating requirement: If you want to keep fish that need heated water, allow for a separate heater.
Before You Decide
Confirm the 40 cm footprint and 21 L capacity suit your available space and intended setup. Check that the lighting, filtration and separate-heater requirement match how you plan to use the tank.
