Solar Water Heater Progress

My two boys helped lift the water tank to the frame.  I am happy I can set up it by ourselves.  It takes trial and error to get the assembly right.  Now it is ready for hook up to my water system.  I called the plumber this evening as he promised to come this week but have forgotten to give me a date.  Now he promised to come on Thursday or Friday.  This is how it look like...