OK - I was intrigued. So I had a little coffee, thought deep thoughts, and did a little digging.....
Water molecules are bound together with weak bonds called hydrogen bonds - think about water as being sticky for other water molecules. Electricity and magnetic fields do indeed break apart these bonds. Also the shape of the water molecule "clusters" change. The clusters do become more tetrahedral in shape which will allow spaces for molecules that normally would not attach to water ( hydrophobic molecules) and colloids ( really small particles suspended in a fluid) to attach. And yes, the transfer of light will happen better - but not for the reasons you might think ( ie clearer - cleaner water).
Here are what I see as some potential problems :
The hydrogen bonding is reponsible for the high energy needed to turn liquid water into gaseous water. This is why it takes so long for water to boil, to evaporate, and to do such a marvelous job at keeping us cool when we sweat. When this bonding is broken, water will evaporate faster. You should have to top off more frequently. I could see this being an issue for those with MH
The weakened hydrogen bonding also effect the amount of DO in the water. By weakening the bonds, the DO will be lower. It also apparently changes the levels of dissolved CO2
. Messing with the bonding will impact the pH of the water.
The increase in the light transfer really intrigued me. This increase in photon transfer is due to the smaller number of nanobubbles of oxygen in the water. These bubbles scatter light, so with fewer nanobubbles due to less DO, the light is not scattered and continues to move through the tank.
Cool stuff ( science - wise ) but I'm not convinced that the advertised benefits would outway some of the potential problems. This device should actually affect the viscosity of the water as well.