hw UV water clarifier model 4000 (75 watts/220 V)

Effective protection against germ formation, bacterial water cloudiness and floating algae in sea and freshwater aquariums

Aquarists know the problems: Despite careful care, their fish swim “in clouds” or the long-awaited, successful breeding of their fish fails due to fungal infection in the eggs. The reason for this is usually contamination of the aquarium water by bacterial microorganisms, water cloudiness or floating algae.

Their spread is prevented effectively, safely and without harmful side effects by using hw-UV water clarifiers. In the mini-ecosystem aquarium, due to the limited water volume without hw UV water clarifier, the bacterial load is many times higher than in nature and puts an extremely heavy burden on the aquarium system. hw UV water clarifiers ensure a natural balance and create natural conditions in the aquarium.

hw UV water clarifiers are a special design that has proven itself more than 100.000 times in research institutions, in the commercial sector and in ambitious hobby aquaristics. Due to the extremely large contact surface to the direct UV-C radiation source, in conjunction with a small layer thickness (3-4 mm) of the water to be irradiated, an intensive irradiation is achieved that is otherwise only possible with devices with almost twice as high wattage would be achieved.

In a closed radiation chamber, the aquarium water is passed directly past an artificial, high-intensity UV-C radiation source. Here, the bacterial microorganisms, water cloudiness and floating algae in the water are irradiated so intensively with UV-C radiation that they are killed directly or are no longer capable of cell division and die.

The special glass jacket used acts as a UV-C radiation reflector, which reflects the UV-C radiation back into the irradiation room. In this way, the intensity of the irradiation is significantly increased and an increased power output is achieved. At the same time, the special glass jacket enables precise functional control of the UV-C burner as well as the condition of the irradiation room. The visible light that penetrates to the outside is completely filtered out and completely harmless (corresponding to the light emission of a normal neon fluorescent tube...).

During the UV-C irradiation, sterilized water from the hw® UV water clarifier constantly mixes with germ-rich water from the aquarium (nitrification bacteria in the filter and substrate of the aquarium are not damaged by the UV-C irradiation).

So it is not a complete “disinfection” of the entire aquarium water, but rather a strong germ reduction (maximum germ reduction in the entire aquarium system approx. 98%) of the aquarium water. This fact is extremely important and necessary because the germs remaining in the water (approx. 2 - 3%) maintain the fish's antibody production against pathogens and strengthen their immune system.