Juwel light unit Multilux LED as spare lamp or for replacing an lamp in existing Juwel aqaurium hoods or aquariums. The Juwel MultiLux LED is a high-performance, energy-saving LED light unit for your JUWEL aquarium. The replaceable DAY and NATURE LED tubes create an optimum light spectrum for plants and fish, while saving up to 50 % of energy in comparison to T5 light units at the same time.