I thought this was one of the best puzzle games I've ever played! I managed to get to the third level. I was so impressed at myself. For the first one, you just connect the two wires together. For the second one, first you freeze everything. Then you put the dial in the middle to add more water but not melting the ice.
Repeat the process until you get to the top and press the red button. The third level is the one I'm stuck at. Okay, I got it. You mostly just screw around with the arrows. I love how simple it looks. It better shows off how difficult it is.