The forward-looking UV-C unit sera algovec UV removes algae, mold and pathogens in aquarium water in a purely physical way. In combination with a biologically active filter it thus allows for algae free, clear water and healthy fish, entirely without chemicals. The integrated pump draws the water through the slots at the sides so it gets cleaned by the UV-C radiation present on the inside, entirely without chemicals. The included pump FP 350 is particularly energy saving. Ist performance can be adjusted individually. The Y piece allows adjusting the current flow direction variably. The included suction cups allow easy attachment (vertically or horizontally) of the sera algovec UV to the aquarium glass.sera algovec UV+ suitable for aquariums up to 100 l+ adjustable pump 350 l/h+ 5 W UV-C unit with electronically ballast+ adjustable piece for current distribution+ suction cups for individual attachment+ dimensions: width: 9 cm, height: 22 cm, depth: 9 cm