Had to clean (water and baking soda) the positive terminals on my 6 volt lead acid batteries and give them a drink of distilled water as they were a little low. The two 12 volt sealed AGM's were clean as a whistle and in no need of fluid.
The bottom cooler is the reservoir and includes a 12VDC pump that is timed via the kit I soldered together. Right now it is set to pump for 6 seconds and wait 3 minutes till the next cycle (this will be adjusted to provide optimum cooling). The water moves up to the small container mounted above the top cooler. It drips through 8 holes onto the evaporative medium. Excess water drains back down to the bottom cooler. Four 100cfm muffin fans blow the cool air inside my house through a NW window. Air exhausts through a SE window. 97,109,52,0,C