FAQ - Frequently asked questions

No, with a few exceptions (see installation instructions), a wall tank may not be installed free-standing. When installing, it must be ensured that the wall tank is attached to a load-bearing wall with a maximum clearance of 2 cm.

For narrow, high, top-heavy containers, a wind protection device should be installed if it is included in the scope of supply. The wind protection is attached to the top of the container on one side and to a solid wall on the other.
You can find an installation video on wind protection under Garantia TV.

To clean a closed, above-ground tank, remove the inlet of your tank, open the drain plug at the bottom and rinse the tank through the inlet with a garden hose. After cleaning, you can reattach the drain plug and the inlet.
You can find a video on cleaning a closed tank on Garantia TV.

The threaded plug for residual emptying can be unscrewed using a coin, the back of a spanner or a chisel, for example. Unfortunately, there is no special tool for this. To ensure the tightness of the drain plug, we recommend wrapping additional sealing tape around the thread of the drain plug before screwing it in.

No, the above-ground rainwater storage tanks are not suitable for storing drinking water.

To avoid long-term damage from frost, above-ground containers must be completely emptied in winter. Almost all of our rain containers have an opening at the bottom for residual emptying.

All downpipe filters and rain collectors (except Avanti) can be switched to winter mode so that no water can flow into the container. If switching is not possible, you can simply leave the opening for residual emptying on the container open. You can find more information about the individual containers in our winter check.

If there is a leak between the threaded container and a screw connection, outlet tap and the lower sealing plug, the threaded connection must be sealed with commercially available Teflon tape.

To ensure sufficient working space, the base area of the excavation pit must exceed the tank dimensions by  more than 500 mm on each side, and the distance to fixed structures must be at least 1000 mm.

When planning the location of the tank, attention must be paid to the current or planned tree population. The distance to an underground tank should correspond to the expected maximum crown diameter of the tree population.

No, above-ground installation of underground tanks is not permitted.

When installing a tank in an area with traffic, a suitable tank cover must be used. Additionally, depending on the tank type, the required ground cover must be ensured. The required ground cover can be found in the respective installation instructions, which can be downloaded from the respective product pages.

If the distance to a slope, mound or an embankment with a gradient of 5° is less than 5 m, a statically calculated retaining wall must be erected to absorb the earth pressure. Please note that the wall must protrude at least 50 cm beyond the container dimensions in all directions and must be erected at a minimum distance of 100 cm from the container.

You can use the rapid soil test to roughly assess whether your building ground is generally suitable for rainwater infiltration. You can find instructions and an evaluation aid here: Rapid soil test.

In principle, it is possible to connect two or more containers. Various connection sets are available for this purpose.
You can find an installation video for the rain barrel connection set here: Installation video
To connect closed rainwater storage tanks without lids, you need the Flex Comfort connection set.
You can find an installation video for the Flex Comfort connection set here: Installation video
When connecting several containers, it is important to ensure that there is adequate ventilation.

You can use our universal hose set to recognise the fill level of our above-ground containers and to fully utilise the remaining volume (watering can height downwards) in the container.