I would say it doesn't work.
I found this
"As a scientist, I was astonished. It didn't surprise me that I
couldn't find any scientific experiments [Emoto] has performed or any
peer-reviewed journal articles that have been published describing
controlled studies of Emoto's work. A further search revealed that
Emoto's degree was from the Open International University in India,
where an M.D. degree costs $500 and a Ph.D. costs $350, no classes or
Is Masaru Emoto For Real?!! Blog: Review and analysis of Dr. Masaru Emoto’s
published work on the effects of external stimuli
on the structural formation of ice crystals.
"After the lengthy review of Emoto's research methods and results, I
have come to believe that Dr. Emoto is offering pseudo-science to the
masses in the guise of defensible research."
And I think this comment by Masaru Emoto is particularly illuminating :
In fact, in the Maui News interview, Dr. Emoto specifically stated,
“I do not require any blind tests on any samples,” but rather he
believes that “the researcher’s aesthetic sense and character is the
most important aspect when taking crystal photographs.”