
Rainwater collection tank Ø1300 (900-2.800 L)
Rocko Ø1300 - Compact rainwater tank for small spaces.
The Rocko Ø1300 rainwater tank is a compact, vertical solution for storing rainwater on small to medium-sized properties. Thanks to its space-saving design, the tank is particularly suitable for installations with limited space.
The tank is made of high-quality polyethylene (PE) and is manufactured in a single piece, resulting in a completely watertight construction. The robust design with a wall thickness of 8–14 mm ensures high stability against soil loads and external influences.
Rocko Ø1300 in detail.
The Rocko water tank is primarily designed for underground installation, but can also be used above ground as a freestanding tank. Thanks to its vertical shape, installation is simple and can in many cases be carried out without heavy construction equipment.
An integrated DN 600 manhole (300 mm height) provides convenient access to the tank and can be adapted to the terrain.

- PE LID WITH ADAPTER (INCLUDED IN THE BASIC PACKAGE)
- The lid, equipped with a gasket and a hinged closure, ensures effective watertightness. The PE lid (DN 600) has a load-bearing capacity of up to 200 kg.
- CONNECTION OPTIONS
- REINFORCING RIBs
- Reinforcing ribs on both sides ensure the tank's stability and provide protection when the water table is high.
- INTEGRATED EXTENSION
- The length of the Rocko tanks can be adjusted to suit the terrain.
- PE RING
- The PE ring allows for easy installation of an additional fuel tank extension, making it easy to adapt to the terrain.
Technical Specifications and Dimensions
Advantages
The Rocko rainwater tank offers a wide range of benefits. Here is an overview:
Cost-effectiveness & efficiency
- Space-saving vertical design, ideal for small lots
- Easy installation even in tight spaces
- Design that is easy to transport and assemble
- Installation is often possible without heavy construction equipment
Safety & structural integrity
- One-piece construction made of polyethylene for maximum sealing
- Reinforcing ribs on both sides increase stability in the ground
- High resistance to soil loads and external forces
- Certified mechanical strength and stability and water resistance by ZAG
Sustainability & maintenance
- Made from 100% recyclable polyethylene (PE)
- Corrosion-resistant and durable
- Easy-to-maintain access via DN600 manhole
- Height adjustment to the terrain using a dome shortener and an extension ring
Other Rocko variants
Rocko Ø1300
Compact rainwater tank for small spaces with flexible storage capacity.
Current selection
Rocko Ø1800
High-capacity rainwater tank for medium to large-scale applications.
Rocko Ø2300
Large-capacity rainwater storage tank for high water demand and large-scale projects.
FAQ
The Rocko Ø1300 is particularly well-suited for smaller properties, single-family homes, or garden irrigation. Thanks to its compact design, it can be installed even in tight spaces.
Yes. The Rocko Tank is primarily designed for underground installation, but it can also be used above ground as a freestanding water tank.
Yes. The tank is made from a single piece of polyethylene (PE) and is therefore 100% watertight.
Yes. The tank has mounting holes so that it can be secured to a concrete slab if necessary.






