New? CO2 generator/ Controller

So during my normal browsing for stuff and research came across this.
Is this to good to be true?

http://www.top-messtechnik.com/jtlshop/bilder/produkte/gross/571.jpg

With our TMT carbon plus 81B you receive an absolute innovation for CO² management in your aquarium. The equipment produces by electrolysis carbon dioxide necessary for the aquatic plants. Water is split into hydrogen and oxygen. The free oxygen now reacts with the carbon of the coal plate to carbon dioxide, which immediately converts into the water. The also developed H² diffunds absolutely safe in smaller quantities. The handling is extremely simple: Plug in plug socket - ready !

An further pleasant side effects apart from the lowering of the pH value by the produced CO² is the slow softening of the aquarium water effected by electrolysis. Carbonate hardness is diminished (HCO³)² --> CaCO³ + CO² + H2O. The developing lime lining CaCO³ on the plate simply can be abraded. By the weekly partial water change hardness is supplied again to the water. As the achievement of our carbon plus is fully adjustable through its controller, the desired water values (pH, hardness, CO²) can be hold stable and durable once being reached after the starting off time. The equipment is perfect for those aquarium holder having too high pH and hardness values e.g. in the south america basin or prefer plants e.g. holland/dutch aquarium.

An optimal addition for controlling our carbon plus 81B is our PH CONTROLLER PH-201. Dependent on the pH value and thereby concomitantly on the CO² content the carbon plus is activated or deactivated automatically. So an extension of the life span for the coal plates is reached. These are available as spare part EUR 12,99 in our shop. Past experiences show that the coal plate in a reference 200 litres aquarium (pH 7, KH 10) lasts for more than 1 year.

 

its to good to be true. it messes up the tank. dont waiste money on those things. had one about 3years ago

 

Had one a few years ago. It messed up my substrate so badly (turned it into a black tarlike muck) that I had to start over again.

Don't bother.

 

Thanks guys.
That's why asking the question is important.
Almost blew 50 od Euros on this