Concrete cistern or plastic tank?
Advantages of a rainwater storage tank made of plastic
Plastic tanks, unlike concrete cisterns, can usually be moved without heavy equipment due to their lighter weight and therefore avoid major damage to the excavation pit and garden. This is especially important if you are retrofitting a rainwater harvesting system in your garden.
Easy to handle
Due to the low weight of Speidel cisterns and the carrying handles, the tanks are easy to handle and installation is possible even without heavy equipment. So you can even easily transport your cistern with a cargo bike! In case a crane is needed after all, our tanks have additional crane eyes.
Easy cleaning and clean water
Another advantage of the plastic tank is the low adhesion characteristic and thus easier cleaning. In comparison, concrete tanks have rough inner walls to which dirt can adhere more easily. There is also a risk that leaching of cement particles will contaminate the rainwater and, in the worst case, cause pump damage. Lime precipitates from the concrete of the cistern can also make the rainwater, which is actually low in lime, "hard" and thus shorten the life of your washing machine.
Absolutely leakproof, robust and easy to maintain
Speidel tanks are made in one piece without a weld seam. That is why they are so leak-proof. Because where there is no seal, nothing can leak. This makes them durable and so robust that they can even be driven over by car. The large diameter of the dome shaft facilitates maintenance.
No deep excavation necessary
Plastic rainwater cisterns, due to their flexibility in shape, are also suitable when deep excavation is not possible. Examples of this are our flat tanks and slim tanks.