Experiences with UV sterilizers show that they have an amazing effect in eliminating the most undesirable effects in the aquarium as described below:
Green water
This effect is known in the aquarium hobby by many names: algal bloom, water flower, green algae, green water, dust algae etc. All names describe the same effect, the aquarium water turns usually within a few days into green. The green coloration can be so strong that exist only a few centimeters depth look. The effect is similar to a glass, in which a brush with green paint was bringed in. The cause of this effect is the explosive growth of green algae, mostly belonging to the genus Volvox, called Volvox. This Volvox are too small to be retained by the filter media. Also large water changes up to 90% gain for a few days relief, the joy of the proliferation of algae resulting in the ball will reach the original population density after a short time. Aquarists are standing in front of such a problem is usually just before despair. It is not even to see in such a situation to be able to fish and to evaluate the health of the fish. Remedy creates an UV sterilizer here. The successes are striking the green water is transformed within days in clear, crystal clear water with a view depths of several meters.
White Water
In addition to the green water, another undesirable effect occurs in aquariums which is also described under various those names: White Water, Bacteria bloom, milky water, Infusorienblüte, cloudy water, etc. Again, the effect is triggered by the massive growth of bacteria, which in turn a massive reproduction of single-celled organisms, called infusoria trigger. The water turns milky and also in this case, a UV clarifier provide effective remedy. The bacteria are passed through the UV clarifier and die from that protozoa are losing the basic food and also go back to a normal level. Also an aquarium with UV clarifier will contain protozoa, these are but feed on living plants and ground bacteria and not by the bacteria in the aquarium water.
Flower
On the surface of the aquarium water sometimes occurs, the following effect on: it forms a thin layer that looks like a layer of dust and partially form a kind of wrinkle when eg a filter discharge surface water can flow together in one area. With a water change the flower is broken and removed, but it forms itself within a few days again and close itself again. The skin itself consists of bacteria and yeast. UV sterilizers are rarely used specifically to remove the unwanted scum, but here the effect is startling, the scum will disappear after the use of an UV sterilizer after a few days.
Filamentous algae
In contrast to the effects fazinierenden in eliminating algal blooms, milky haze and pellicle, UV clarifiers are not suitable to eliminate filamentous algae from the aquarium. The algae are not headed in the UV clarifier, since they are mostly grown firmly to the ground. After removing floating algae filamentous algae usually find even more optimal supply of nutrients and grow unhindered. Filamentous algae must therefore be fought by other means. Tips and hints, see the following website: www.Aquariumalgen.wordpress.com.
Performance requirements
In the various hunting and internet forums will be discussed at the necessary minimum size of UV clarifiers. Experience in the use of UV clarifiers show that even small devices operate up to 11 watts is sufficient for the current hunting area in pool sizes up to 500 l.