Garantia Cubus Garden Tank – 340 L, 700 L & 1000 L, Concrete Grey or Dark Green

The Garantia Cubus Garden Tank is one of the larger-capacity water butts in the Garantia range, available in 340L, 700L, and 1000L sizes. Manufactured by Graf, sold under their Garantia range, it connects directly to your downpipe to collect naturally soft rainwater for garden irrigation. Built from 100% recycled plastic, with three 3/4" threaded connections for flexible water extraction — via tap, universal hose set, or full drainage before winter.

Multiple Cubus tanks can be linked together if you need additional storage capacity beyond a single unit.

Key features

• Available in 340L, 700L, and 1000L – suitable for gardens, allotments, schools, and business parks

• Three 3/4" threaded connections – for tap, universal hose set, or full drainage before the frost period

• Chrome or brass tap included – connects via integrated thread without drilling

• Extendible – multiple units can be linked together for increased storage

• 100% recycled plastic construction – UV-stable and weather-resistant

• Concrete Grey or Dark Green finish

Connecting to your downpipe

A downpipe diverter is required separately — add one to your order below. If you're connecting to a square downpipe, you'll need the Square Downpipe Diverter specifically.

Per Graf's installation guidance: "The water butts do not come predrilled. This product is very easy to use and can be drilled in by anyone. Simply attach the drill bit onto your drill and begin drilling – remember you must drill the hole in the water butt at the same level as the hole in the downpipe! As long as the holes drilled in both the water butt and the downpipe are level, the water will continue down the downpipe when the water butt is full."