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In this video I show TWINSTAR aquarium sterilizer, presented at the booth of Stattrand Aquaristik during Heimtiermesse 2014 in Hannover, Germany.
TWINSTAR looks a little bit like CO2 diffuser, but it’s not a diffuser. It doesn’t produce ozone O3, either. TWINSTAR consists of two electrodes, made of metal mesh, and an “intelligent” power supply. When turned on, the electricity conducted to the electrodes cause electrolysis of the water particles – so these “microbubbles” you can see in the video are made of hydrogen and oxygen, probably. These gases, however, are not the sterilizing factor. Somehow hydroxyl radicals (OH*) are also produced, and they make the sterilization possible. they disrupt cell membrane of algae and harmful bacteria, but they don’t do anything bad to “good” bacteria in filter and substrate. They also don’t harm plants or fish. According to what I have found in the internet, TWINSTAR works best in newly set up aquariums, as it prevents development of algae. But in an old aquarium it will not kill existing algae, or will kill them, but to a limited extent.
You can read more about TWINSTAR here: