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				Originally posted by Troy F: 
www.reeftec.com  Check out this innovative new product by Mike Kirda.  There is a review in Advanced Aquarist by Richard Harker (haven't checked yet but Mike says there is).  
			
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 <font size="2" face="Verdana, Helvetica, sans-serif">Umm...
First of all, I don't make this product.
Jimmy Chen is the owner/creator/maker.
Reading further on this thread...
Anyone wanting to create knock-offs... go ahead.
You'll find that the drive-dog is rather difficult to make without the proper tools. I couldn't make one, and I know how they are made...
Funny how quick you all are: JC makes essentially ZERO profit on these units. Good luck with your DIY endeavors. Hope your time is worth about a $1/hour...
Regards.
Mike Kirda