wavemaker

[wegotjs]

Anybody use one of these wavemakers? and with what results.
http://www.currentsea.com/wavemaker.htm

[mister crabs]

good price....wonder how it works. looks like it turns the powerheads on and off instead of just powering them down like other setups. wonder if this will shorten the life of the powerhead or have any other adverse effects?