After having the ultrasonic device in operation for a couple of weeks it looks as if there are more algae then before. What happened?
The number of algae has not increased, it only looks that way! There are two possible reasons for this: a. Sometimes (roaming) algae do not sink to the bottom after being LG Sonic® treatment, but form a tiny methane (gas) bubble, which makes them drift to the surface, giving the impression as if they have multiplied fast. If one pushes the dead algae aside one can see the clear water underneath. After a rain shower the bubbles normally brake and the dead algae will sink to the bottom. If you do not have the time to wait for rain, the algae can be scooped off. b. Dead filamentous algae are loosened from the bottom and sides of the water reservoir and then fall apart, thus suggesting that there are more algae in the water then before. Dead filamentous algae always have to be scooped from the water surface because they block the water surface and absorb the ultrasound waves like a blanket.
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