The valves I circled are for the sheer descent waterfalls and fountain on the tanning deck. I can close them, and I want to when I'm not out there enjoying them, but I want to be sure I'm not dead-ending anything. Can anyone tell for sure by looking I'm good to do with those valves? The light blue lines I drew are the valve position they are in when when working. This is an old pic after install and nothing was flowing. I'm also guess the smaller blue valves to the left are for each individual waterfall?