CX manufactures tanks that are modular, extendable and which can be disassembled (patented utility model by Aquadipòsits). This system enables the composition to be expanded up to 4 levels at any time. It can also be disassembled and easily positioned, while no additional civic works are necessary for the majority of locations. People and/or light vehicles can pass over the cover and it contains holes so that water can go in and out. It can be wholly or partially buried. Watertight sealing is guaranteed.
Circular tanks have an interior diameter measuring from 5 to 20 metres. Tank heights range from 2 to 6 metres. Once assembled, a tank can be extended at any time, up to 6 metres in total.