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FALSE
To achieve an optimal ultrasound irradiation from the transducer into any liquid, there needs to be a certain impedance matching between the material (housing) of the transducer and the liquid. The bigger the difference between the impedance value, the higher the reflection coefficient, the less ultrasound will be transmitted into the liquid.

For example, the impedance of a polyurethane housing is closer to the impedance value of water. This will results in low reflection coefficient values and good ultrasound transmission. At the other hand, stainless steel housing will result in high reflection coefficient and low transmission values. In this case, much of the energy produced by the transducer will be reflected back into the transducer ceramic element.

FALSE
In many European countries (such as: Belgium, France, the Netherlands) professor is not a legally protected title. This means everybody can call him- or herself a professor. A protected title, referring to an education which has been completed is for example Engineer, Master or Doctor (Phd.).
Thus, the title professor does not say anything about the expertise of a person. LG Sound does have certified biologists, Engineers, Masters and Doctors employees. If necessary, LG Sound’s employees could send their diploma(s).
We doubt if “the professor” can send any university diploma when asked for.

TRUE
LG Sound has aluminium electronic boxes with an IP degree of 67. This means that the boxes can be left outside during dry and wet weather.

FALSE
The LG Sonic® units can perform on solar energy (low DC voltage) and on alternating current (AC) of 110 or 220 Volt.

• Initially, both DC or AC electrical energy will be received by the electronic box installed on dry land.
• Secondly, the electronic box will convert the relatively high voltage (in this case AC voltage) containing high amperes value into low power signals of low amperes value (milliamps).
• Thirdly, the transducer translate these incoming specific signals into ultrasound of specific frequencies.      

Even when a transducer cable is damaged this can not become of any danger to humans or the other life forms present in the water.

FALSE
Next to being capable of operating on alternating current (AC) input, the LG Sonic® Plus models are all capable of performing on solar power or any other DC power input. The LG Sonic® Plus models operate on power input of 36 V. The overall power consumption is low (max 13 Watt/hour), which makes it possible to use small solar panel.

FALSE
LG Sound guarantees the ultrasound transmitted ranges as stated. The power of the ultrasound signal being send from the electronic box to the transducer is not lost, this is  because of the special manufacture transducer cable connecting the transducer to the electronic box. The LG Sonic® transducer translate the electrical signal in a very efficient way (minimum signal lost). Furthermore, the housing of the transducer insures also an efficient transmission of ultrasound into water. All these aspects insures the different ranges which ultrasound is being transmitted. Each LG Sonic® model have different ranges, ranging between 5 to 186 meters.

FALSE
LG Sound has a trouble shooting file for all users who would like to test the performance of their product. LG Sound does not mention these kind of tests in its data sheets or advise. If a unit does not seem to function as it should be, LG Sound offers its clients a free check up to find out if there is any problem with the device performance.

TRUE
The sound waves do not interfere with any life outside or inside the water.

FALSE
In all case studies done with the LG Sonic® system, it was never found that the LG Sonic® interferes with radio signals. After all, radio type signals are completely other signals than ultrasound.

TRUE
The power consumption of the LG Sonic® systems is the lowest on the market today.

FALSE
The efficiency of a unit is normally not influenced by the power consumption but by the specificity and the accuracy of the ultrasound signals transmitted into the water.
For example, units with a high power consumption can loose allot of sound power (dB’s = decibels), because the transducer would not be able to efficiently translate the incoming signals if this is of to much power. Please, read also: “1.) A stainless steel transducer is better then a polyurethane transducer.” stated above.

Furthermore, the algae growth control/suppressing efficiency of an ultrasonic device depends also on the quality of sound waves which is being send out. This is reached by the effective signal calculation and production by the LG Sonic® electronics and the effective translation of these signals by the LG Sonic® transducer into ultrasound, and the effective transmission of ultrasound into the water. 
These are the 3 effectiveness mechanisms of the LG Sonic®  systems.   
Scientific research has shown that, even though the LG Sonic® has the lowest power consumption, the LG Sonic® does have the strongest sound signal on the market today.

FALSE
The LG Sonic® transducer can not overheat. It is true however, that when the transducer is placed outside of the water for longer periods, the life-span of the transducer can be shortened. Therefore, we advice to turn off the  LG Sonic® system when being removed from the water.

TRUE
According to our scientific researches and per our numerous experiences, there were no evidence found which indicates that the ultrasound produced by the  LG Sonic® systems have any negative effect on these organisms.

FALSE,
These kind of devices are made to be placed in the centre of the water reservoir. However, because the transducers do not exactly transmits ultrasound with a radius of 180 °, some part of the water will not be treated. Thus, when using 2 transducers it is better to place them both at the shore/edge of a water reservoir.