Maximising pool temperature and inhibiting algae growth at the same time is now possible with this innovative light filtering material, meaning there is no need to compromise between temperature performance and chemical savings. The EnergyGuard™ selective transmission 500micron material consists of a clear top surface and a midnight blue bubble layer. This midnight blue layer has the ability to selectively absorb and transmit different areas of the solar spectrum. Allowing the material to absorb solar energy used in photosynthesis and pass this to the pool through conduction, while transmitting Inferred wavelengths through the material to heat the water directly. Offering optimized solar gain and algae inhibition, the patent applied for EnergyGuard™ material now effectively delivers the best possible balance between solar heat gain, chemical and filtration reductions, making it the most innovative solar cover to date.