[Delphinus]

I generally let mine stew overnight anyways with a powerhead and a heater, that way when it goes into the tank it is more or less the same temperature as the water in the tank. Don't know if it's a big deal or not but I like to do it that way.

Also, I wasn't sure about finding a propellered shaft thing as Craig mentions but I use a paint stirrer attachment for my drill and it is almost the same idea (it's just chrome instead of plastic). Since I mix salt in a 30g rubbermaid the larger size mixer seems to be perfect (I can get submerge the end right to the bottom of the can). The only issue for me was that these larger mixers use a 1/2" shaft and usually only the really expensive drills (i.e., the >$180 drills not the $50-$80 drills) have a 1/2" shaft. But you can get a 3/8" to 1/2" converter chuck though. I think I paid $18 at House of Tools for one, and now I can use a 1/2" shaft on my 14-year old drill. If I burn out my drill ... well .. I guess it's a 14-year old drill and it doesn't owe me anything anymore, but for now this works like a breeze.

If you mix in a 5g or 8g pail the smaller sized mixers (with a 3/8" shaft) are an ideal size for those.