Could be. I have to get to the lights next. One my lights went bad yesterday night when i was inspecting my pool! Looking for 6500k LED this time. But not sure if it will fit. But need to find an LED that is 6500k first.
Sweet pool!
Now that the valve mystery is solved allow me to point out one more thing. Your pumping station was "professionally" installed. In typical "professional" fashion they did not attach the pool pump to the rest of the system with proper unions. When the pump eventually has problems and fails most of what you took a picture of will have to be cut out in order to replace it. They turned what should have been a 20 minute job into at least a half day on purpose. Ask me how I know...