The gel you want to use and can get from CVS, HD, Lowes or anywhere else is called cyanoacrylate gel. Regular super glue is the same, but a much thinner liquid.
The advantage to the IC Gel and why so many people here prefer it is because it is even thicker than the standard super glue GEL. It works great underwater, is strong and also comes in much larger tubes than the cheaper ones mentioned above.
These larger, better tubes of IC gel can be purchased from Josh and not only work better, last longer (larger tubes), less expensive (I BELIEVE they are $5 or $6 each), no shipping, AND, you will also be helping to support Manhattan Reefs.
So there you have it.
swimmer