Has anyone attempted to use this pump in there HERMs system. http://www.ebay.ca/itm/12V-Solar-Ho...463497?hash=item58b5b1ffc9:g:vnAAAOSwq7JUIoLW It was recommended on here when I asked about pumps but tried it for the first time today and holy nightmare. First I am sure 90% of the issue was my fault but not sure. I did have it hooked up to 24VAC rather then DC so not sure how much that will screw with it. I had it connected to a doorbell transformer. Blew 2 doorbell transformers before I realized it was DC not AC. My bad. But my question is will DC power really make much of a difference. I was barely able to pump water from the bottom of my HLT to recirc it into the top of it. Wouldnt even start pushing it through my HERMs coil. I wouldnt think it would have more then 6" of head lift that it needs. My MT and HLT sit at the same height and the wort level in the MT is higher then my coil so just the liquid height (think its some law in chemistry just keep having boyls law stuck in my head and thats gas) should push the wort up through the herms coil and I should really only need about 6" of lift. Was not happening at all with these pumps so hoping this was an AC/DC issue and not these pumps were a complete waste of waiting 30 days for them to get here from China. Good news is it was the first run with the Electric Panel and electric brewing and everything with that worked great and honestly thats where I was worried I would have problems not the damn pumps.