Before you want to use rainwater in your home you want to make sure that the rainwater is clean. GEP has developed rainwater filters for this purpose based on Trident ™ filter technology. This technology ensures that dirt particles are separated from the rainwater before the clean rainwater is stored in the tank. The varitank filters for rainwater are designed to be mounted on a rainwater tank or rainwater citern. With a Trident ™ rainwater filter you are assured of pure and clean rainwater before use. You can also create a design of a rainwater system online via the online GEP rainwater calculation module.