soft start for powerhead

[clintyiu]

I read in the other forum that you cannot soft start a powerhead with cheapo capacitor/voltage reduction etc.

So I searched and searched for a soft start module that will work with a single phase shaded pole motor. The only circuit I can find will work with single phase motors but they didn't say whether they can handle shaded pole systems....and they cost a fortune.

If what I read is true then how do those commercial wavemakers provide a soft start feature. Has anyone tinkered with a simple capacitor soft start for their powerheads?