
Corten steel or aluminium water table: which should you choose?
, 13 min reading time

, 13 min reading time
Choosing between a Corten steel pond and an aluminium pond can seem straightforward until you need to decide which material genuinely suits your garden and intended use. Corten steel develops a warm orange-brown patina, while aluminium does not form a Corten-style rust patina and retains a more consistent material appearance. Weight can also differ considerably: between two models measuring exactly 125×80×50 cm, the Corten steel version weighs 73 kg while the aluminium version weighs 34 kg. This guide explains which material suits different gardens, which three models are relevant and what to consider when comparing appearance, size, weight, placement and interior finish. This allows you to choose based on practical differences rather than appearance alone.
Choose Corten steel if you specifically want a warm, evolving patina and a distinctive material appearance. Aluminium is better suited when lower product weight and a more consistent exterior without a Corten-style patina are important. Of the two directly comparable 125×80×50 cm models, the Corten steel version weighs 73 kg and the aluminium version 34 kg. Neither material is automatically better: the right choice depends on appearance, available space, shape and placement.
Corten steel gradually develops its characteristic orange-brown patina outdoors. According to the product information for the Corten steel models discussed here, this natural colour development takes approximately four to five months depending on weather conditions.
Aluminium does not undergo the same Corten-style patina process. Its appearance therefore remains more consistent, making it suitable when you do not want a changing rust-coloured exterior.
The clearest weight difference can be seen between the two rectangular models measuring 125×80×50 cm. The Corten steel version weighs 73 kg, while the aluminium version weighs 34 kg.
Because both models have exactly the same dimensions, this provides a useful direct comparison. However, this difference should not automatically be applied to ponds with different dimensions or constructions.
Shape is another important consideration alongside material. A rectangular pond measuring 125×80×50 cm requires a different amount and shape of space than a round 250×50 cm model. Measure not only the available area but also consider how the pond can be moved into its final position.
All three models discussed have a material thickness of 3 mm and a black polyurea coating on the inside. According to the supplied product information, all three are suitable for keeping fish.
Aluminium works well when you prefer a more uniform and understated material appearance. Its clean exterior places greater emphasis on the shape of the pond and combines easily with contemporary garden materials.
Corten steel can instead be used deliberately as a contrast. Its warm patina against concrete, dark paving or structured greenery can make the pond a more prominent feature.
With its orange-brown patina, Corten steel pairs naturally with timber, greenery and earthy tones. Its gradual colour development can become part of the garden's evolving character.
In the same setting, aluminium can provide a cleaner contrast. The right choice therefore depends not only on garden style but also on how prominently you want the pond to stand out.
When product weight before installation matters, the direct comparison between the two 125×80×50 cm models provides useful information. The aluminium model weighs 34 kg compared with 73 kg for the Corten steel version.
Within this specific comparison, aluminium is therefore lighter to position before use. However, a filled pond should not be considered easy to move simply because its empty weight is lower.
For a larger garden, a round pond measuring 250×50 cm can be an interesting choice when the pond is intended to function as a central design feature. The round Corten steel model discussed here weighs 241 kg and is therefore on a completely different scale from the two rectangular models.
Do not use this figure to conclude that Corten steel is always heavier than aluminium. The dimensions and shapes of these models differ too much for that comparison.
This rectangular Corten steel pond suits anyone looking for a compact model while deliberately choosing the warm, evolving appearance of Corten steel. Its 125×80×50 cm dimensions also allow a direct comparison with the aluminium model below.
This aluminium pond suits anyone who wants the same rectangular dimensions but prefers a lower product weight and no Corten-style patina development. At 34 kg, this model is considerably lighter in the direct comparison than the Corten steel version of the same size.
This round Corten steel pond suits larger gardens where the pond is intentionally used as a prominent design feature. Because of its round 250×50 cm format, it does not provide a direct weight comparison with the two rectangular models.
| Model | Weight | Best use | Appearance | Key consideration |
|---|---|---|---|---|
| Corten steel 125×80×50 cm | 73 kg | Compact rectangular pond | Warm Corten patina | Patina develops after placement |
| Aluminium 125×80×50 cm | 34 kg | Lighter rectangular model | More consistent material appearance | No Corten look |
| Round Corten steel 250×50 cm | 241 kg | Large round focal point | Warm Corten patina | Check space and access |
The 125×80×50 cm Corten steel pond suits anyone looking for a compact rectangular pond with a deliberately warm and evolving patina. The 125×80×50 cm aluminium pond is better suited to those who want the same dimensions with a lower product weight and without Corten-style patina development. The round 250×50 cm Corten steel pond is primarily intended for larger gardens with sufficient space where the pond can serve as a prominent round focal point.
Neither is automatically better. Corten steel is particularly suitable when you want a warm, evolving patina, while aluminium may be more appealing when lower product weight and a more consistent exterior appearance are important.
This cannot be stated for every model. Of the two directly comparable 125×80×50 cm ponds, the aluminium model weighs 34 kg and the Corten steel version 73 kg, but different dimensions and constructions may produce different results.
For the Corten steel models discussed, the product information states that natural patina development takes approximately four to five months. According to the same product information, the actual rate depends on weather conditions.
According to the supplied product information, all three ponds discussed are suitable for keeping fish. The models have a black polyurea coating on the inside, but this feature should always be checked separately for other ponds.
Of the two models with exactly the same dimensions, the 125×80×50 cm aluminium pond has the lower product weight at 34 kg. The Corten steel version of the same size weighs 73 kg, making weight a clear practical difference before final placement.
With clear product specifications, practical selection information and direct comparisons, Doika helps you find a suitable pond more efficiently. Dimensions, weight, material, interior finish and intended use are considered separately, allowing the two 125×80×50 cm models, for example, to be compared fairly without differences in size affecting the result. You also receive clear product information, customer service, return options and warranty in accordance with the applicable product conditions.
The right pond depends on appearance, weight, shape and available space. Choose Corten steel for its warm patina or aluminium for a lower weight at the same dimensions. Explore all ponds for the garden or compare the 125×80×50 cm Corten steel pond, 125×80×50 cm aluminium pond and 250×50 cm round Corten steel pond.