Indubrella pool cover A revolutionary system for energy conservation in swimming pools. The fully automatic Indubrella cover system will cover effortlessly, the most intricate shape of pool. The pool cover operates at the press a button. The system when in operation, encloses the pool a few decimetres above the surface of the water. An insulating layer of air is built up under the cover. In this way the Indubrella pool cover virtually eliminates evaporation, thus saving energy and costs.