Hi Ruth, There are two things to consider. Stirring and current limit. They are both options and not necessary but both of them are good.
Stirring: Thermal stirring is the cheapest, it's just a light bulb. Motorized stirring costs a little bit more. An aquarium air pump costs the most. Those are your choices. I personally don't think that thermal stirring agitates the water enough and I don't like the idea of adding stuff from the air when using an aquarium fish tank pump so I like mechanical stirring. Current Limit: A semiconductor or a resistor. This can range from 5 cents to a few dollars. Both work well. There are plenty of CS generators on the market. If you decide to buy one, make sure it comes with 12 gauge .9999 silver wire. A lot of manufactures use cheaper 14 gauge wire. If you are on a budget, you might want to consider making your own CS generator. It's just two pieces of pure silver wire and a battery or cheap wall transformer. You can add stirring and current limit if you want but it isn't necessary. Ole Bob has a good web site that explains it. <A HREF="http://www.hvacsilver.com/";>http://www.hvacsilver.com/</A> Hope this helps. Andy (^_^) From: Ruth Bertella Is the thermal stirring better than motorized? I was leaning toward purchasing the $99 model from silverpuppy.com based on feedback from others (I've only been on this site for a couple of weeks and am trying my best to learn). I'm waiting to have a little extra cash before purchasing, so was trying to research and find the best unit for my money... Thanks in advance for any and all input!
