How to automatic mixing water

[Kybol]

what about something like this? I used one before and though maybe something along these lines would work?http://www.grasshoppercontrol.com/model62..html

You obviously wouldnt need the engine or blower. The hopper is all plastic, with a electric plastic auger running along the botton, with a gate valve type thing to control the rate into the fan.

Cant find a better pic though, sorry