Coralife Wavemakers

[Reef Pilot]

Yeah, according to this review, it is a patent issue, plus a few other limitations.
http://www.livingreefs.com/coralife-...er-t36090.html

Here are the instructions. It also says they give you a lifetime warranty, and assume that covers the suction cup.
http://www.coralifeproducts.com/File...structions.pdf

My concern is that the suction cup material may become brittle over time, and if/when it lets go, would not be a pretty sight in your tank with a 2900 gph flow pump dangling on a cord.