For erect length, no.
For flaccid length, yes, the weight of the filler can cause it to hang lower in the flaccid state.
* Individual results may vary from person to person.
However, as is also the case for ‘penis lengthening surgery‘, there is no increased length in the erect state.
For the majority of men, it is extra length when hard that matters, not more length when soft.
The good news for heterosexual couples is that there is evidence that the majority of women prefer penis girth over penis length.  Penis girth is what is provided by this procedure.
In a University of Texas Study, 90% of partners preferred a wider penis while only 10% preferred a longer penis, a link to the study is here.
A study by UCLA’s Sexual Psychophysiology and Affective Neuroscience (SPAN) Laboratory found that women prefer a larger penis girth for casual sex.
Results of this study, as reported by LiveScience, have not yet been published in a peer-reviewed journal.