External Powerhead, who has em?
 

does anyone run one of these external powerheads?

http://www.championlighting.com/pics...ics/hitech.jpg
http://www.championlighting.com/prod...cat=493&page=1

there a few different companies making these. the benefits seem to be they don't transfer any heat to the water, you only see a tube in the water and for the flow you get a fairly reasonable price. it looks like they get the extra flow kick out of an educator on the end of the output nozzle.

any experiences with these would be great.

few more pics..

http://www.advancedaquarist.com/imag...ges/tank43.jpg

http://www.advancedaquarist.com/imag...05/TOPpump.jpg

I use the Gemini's, much the same and they are great. Perfect for using on wavemakers. Have been using them for over two years without a hitch.

where did you find them?

Mail order that Pet Place a couple of years ago. I don't think they make them anymore though.