Gear
All-in-one tanks and complete systems: what reef keepers commonly use
Tanks with the filter built into a rear chamber, sometimes sold with the light and pump. Below are 2 items we see often, each with our honest note and where to view it in the UK and the US.
We sell nothing and earn nothing from these links. Prices are as each retailer's page showed them on the date checked, and they change. How this guide works
Listings checked . How we check
What should you look for in all-in-one tanks?
- Room in the rear chambers for a heater now and a small skimmer, filter roller or top-off sensor later.
- Exactly what comes in the box. A "complete" kit often still needs a heater, and some need a light.
- Spare parts sold in your own country, including pumps with the right plug.
Commonly used all-in-one tanks
Specs are as published on the listed pages. Where the US and UK pages give different figures, we show both.
Red Sea MAX NANO G2 Cube
Brand: Red Sea
Our note. A 20 gallon all-in-one with light, return pump, skimmer and gravity top-off, so most of the core kit arrives matched. It costs more than building a nano yourself, no heater is included, and the UK listing we found is the version with the earlier ReefLED 50 light.
Key specs
- Total system volume 20 US gal (BRS)
- 17.7 x 17.7 x 17.7 in (BRS)
- Return pump 250 GPH (BRS); 950 lph on the UK listing
- US kit: ReefLED G2 60 light; UK kit: ReefLED 50 light
- Nano XL skimmer and gravity-fed ATO included; heater not included
UK listing
Kraken Corals (UK): opens the retailer's page for Red Sea MAX NANO G2 Cube in the United Kingdom- Price as shown
- £749.00 excl. cabinet
- Checked
Not in stock when we checked.
This listing is the MAX NANO G2 Ultimate Reef bundle with the ReefLED 50 light. Stock was shown as "checking availability".
US listing
Bulk Reef Supply (US): opens the retailer's page for Red Sea MAX NANO G2 Cube in the United States- Price as shown
- US$799.00 tank only; US$1,149.00 with cabinet
- Checked
Waterbox Cube 20 AIO
Brand: Waterbox
Our note. A plain, well-made 20 gallon cube with a built-in rear filter and return pump, leaving you to choose the light and heater. Good value as a blank canvas, but there is no lid and the UK stock was sold out when checked.
Key specs
- 20 US gal / 76 litres
- 17.7 x 17.7 x 15.7 in (450 x 450 x 400 mm)
- 6 mm low-iron glass
- Return pump 264 GPH included
- UK pump supplied with a European plug (Kraken note)
UK listing
Kraken Corals (UK): opens the retailer's page for Waterbox Cube 20 AIO in the United Kingdom- Price as shown
- £239.00 (sold out)
- Checked
Not in stock when we checked.
US listing
Bulk Reef Supply (US): opens the retailer's page for Waterbox Cube 20 AIO in the United States- Price as shown
- Price not shown on the page when we checked
- Checked