Deep Blue Water MP3000 Mpluse - does it work?

[waterbear]

In a word, No. Pure pseudoscience and snake oil. A quote from a description of how it works :
"The MPULSE 3000 treats pool water by applying high frequency, low voltage impulses directly to the water to change the calcium bicarbonate to a carbonate form at the molecular level. In the carbonate state, the calcium can no longer adhere to pool surfaces."

Considering that calcium bicarbonate does not exist exept as ionic species in slolution
http://en.wikipedia.org/wiki/Calcium_bicarbonate
and that calcium carbonate is the chemical that makes up scale deposits the above statement is pure bunk!
http://www.chem1.com/CQ/aquacrack.html#DB
(scroll down to Electrolytic Water Treatment)
http://www.chem1.com/CQ/aquacrack.html
(scroll down to H20 Concepts)

Now if you go to Deep Blue's current website they have change how it works by stating that the impusles convert the form of calcium carbonate that precipitates from calcite to aragonite (which is more soluble but form a much more difficult to remove scale deposit).
http://books.google.com/books?id=nCF...termines%20if%
(scroll down to calcite and aragonite)
A much easier way to favor the precipitation of aragonite over calcite is to add magnesium to the water (which also favors the production of magnesium scale, which is much softer than calcium scale and much easier to remove, since it is what we commonly call chalk. Magnesium salts are sometimes added to salt pool to make the salt cells easier to clean for this reason but the jury is still out as to whether this works or not. In theory it should but things that should work in theory don't always when tried in the real world. Also, araonite tents to self convert to calcite in the presence of water at normal pool temperatures and aragonite scale is actually much harder than calcite scale even though it's solubility constant is higher, which means that it will not deposit as fast but once it does it is much harder to remove!)
(FWIW, I was involved in an oceanographic physical chemistry research project at U of M in the early '70s in the precipitation of calcium carbonate from various seawater like solutions, artificial seawater, and Copenhagen seawater and one of the main things I was responsible for was determining whether the calcite or aragonite form would precipitate as we introduced various ions to the samples we would run so I have a bit of firsthand knowledge about this too.)
Here is another article debunking the supposed way this system works:
http://www.4water1.com/articles/aqa_ncdscience.html

Don't waste your money!