Flow rate
500 L/h
Water type
Freshwater + Marine
Warranty
2 years
Size
81 x 36 x 50 cm
Weight
25.5 kg
Delivery
Oversize
Juwel Rio 125 LED Aquarium with stand
A 125 litre glass aquarium, cabinet and filtration system in one delivery. The Juwel Rio 125 LED pairs a long, shallow rectangular tank with a matching SBX cabinet stand, an internal Bioflow M filter, a 100 W adjustable heater and MultiLux LED lighting – everything needed to cycle and stock the tank except substrate, décor and water treatments.
Key features
- 125 L display volume – an 81 x 36 x 50 cm tank, longer and shallower than the Lido line, giving shoaling fish more open swimming run.
- Bioflow M filtration – a 3-litre internal filter chamber, driven by the Eccoflow 500 pump at 500 L/h.
- 100 W adjustable heater included – sized for the tank, no separate heater purchase needed.
- MultiLux LED lighting – replaceable Day and Nature spectrum tubes across the tank's length.
- Matching SBX cabinet – rated to 500 kg.
- Five cabinet finishes – Black, Grey, White, Light Wood or Dark Wood, the widest colour range in the Juwel LED tank line-up.
What's included
- Glass aquarium, 125 L
- SBX matching cabinet stand
- Bioflow M internal filter with Eccoflow 500 pump and starter media
- 100 W adjustable heater
- MultiLux LED lighting unit with Day and Nature tubes
Not included
- Substrate, rock or décor
- Water conditioner and test kit
- Fish net and maintenance tools
- Background
- Protein skimmer or salt mix if you're setting the tank up as marine – the tank is saltwater-capable but not saltwater-equipped
Specifications
| SKU | AA3391 |
|---|---|
| Display volume | 125 L |
| External dimensions (W x D x H) | 81 x 36 x 50 cm |
| Weight, empty | 25.5 kg |
| Cabinet dimensions (W x D x H) | 81 x 36 x 73 cm |
| Cabinet weight | 18.6 kg |
| Cabinet maximum load | 500 kg |
| Filter | Bioflow M, 3 L media chamber |
| Pump | Eccoflow 500 – 500 L/h, 5.5 W |
| Heater | 100 W, adjustable |
| LED lighting | MultiLux LED, Day + Nature tubes (wattage not published) |
| Colours | Black, Grey, White, Light Wood, Dark Wood |
| Water type | Freshwater or marine |
Which Juwel aquarium do I need?
The Rio 125 shares its filtration and heater with the Lido 120, but in a longer, shallower 81 x 36 cm footprint rather than the Lido's more square 61 x 41 cm base – better for species that swim in open water than for a tall planted layout. Step up to the Lido 200 for extra depth and volume in a similar overall footprint.
| Model | Display volume | External dimensions (W x D x H) | Weight empty | Filter and pump | Heater | LED lighting |
|---|---|---|---|---|---|---|
| Lido 120 LED | 120 L | 61 x 41 x 58 cm | 25 kg | Bioflow M with Eccoflow 500 (500 L/h, 5.5 W) | 100 W adjustable | MultiLux LED, 2 x 14 W (28 W), Day + Nature tubes |
| Lido 200 LED | 200 L | 71 x 51 x 65 cm | Not published by manufacturer | Bioflow M with Eccoflow 600 (600 L/h, 6.5 W) | 200 W adjustable | MultiLux LED, 2 x 14 W (28 W), Day + Nature tubes |
| Rio 125 LED | 125 L | 81 x 36 x 50 cm | 25.5 kg | Bioflow M with Eccoflow 500 (500 L/h, 5.5 W) | 100 W adjustable | MultiLux LED, Day + Nature tubes (wattage not published) |
Will it fit my space?
Check the combined footprint of tank and cabinet – 81 x 36 cm – against your available wall space; the Rio's long, narrow base fits many walls a square 120 L tank wouldn't. At 25.5 kg empty plus roughly 125 kg of water when filled, the cabinet's 500 kg rating covers the tank with plenty of margin, but the floor still needs to be level and load-bearing.
Suitable for, and not suitable for
Suitable for freshwater community and shoaling-fish setups that benefit from open swimming length, and for marine builds once fitted with the additional equipment marine keeping needs – protein skimmer, salt mix and RO/DI water. Not supplied ready for reef or heavily stocked marine use out of the box, and the shallower 50 cm height gives less headroom for tall planted layouts than the Lido line.
Care and maintenance
Rinse or replace the Bioflow M sponge and poly pad media on a rolling basis rather than all at once, to protect the filter bacteria colony. Check the MultiLux LED tubes annually – Juwel's warranty excludes light tubes and filter media as wear items.
Safety
The heater and pump are mains-powered; run both on a 240 V / 50 Hz Australian supply through an RCD-protected circuit, and never run the heater dry or expose it while unplugged from water. Site the finished, filled system on a genuinely level, load-bearing floor.
Goes well with
- Juwel Digital Thermometer 3.0 – an independent check on the heater's built-in thermostat
- Juwel SmartFeed 2.0 automatic feeder – scheduled feeding for time away
- Replacement Bioflow M filter media
- A quality substrate and background suited to your stocking plan
Warranty and delivery
Covered by Juwel's 24-month manufacturer guarantee on the aquarium, cabinet, heater, pump and LED unit, in addition to your rights under Australian Consumer Law. Filter media and light tubes are wear items and are excluded. This is a large, heavy item – plan for oversize freight and check delivery options at checkout.
Common questions
Why is the Rio 125 shaped differently to the Lido 120?
The Rio line uses a longer, shallower footprint (81 x 36 cm) instead of the Lido's more square base, which suits shoaling fish that use open horizontal swimming space rather than a tall planted scape.
Is the Rio 125 ready for saltwater out of the box?
The tank and cabinet are saltwater-capable, but the included filtration is set up for freshwater. A marine build needs a protein skimmer and marine salt mix added before stocking.
Do I need to buy a separate heater?
No – a 100 W adjustable heater is included and sized for this tank's volume.
What colours does the cabinet come in?
Black, Grey, White, Light Wood or Dark Wood – the Rio 125 has one more finish option than the Lido range.




