Why is it louder I wonder?I have done all rigid plumbing in the past and it conducts a lot more noise than including some vinyl tubing. It basically turned my entire enclosed wooden stand into a soundbox like a guitar or violin. It doesn't look nearly as tidy as your system but it is a ton quieter and allows for a lot more flexibility as far as fitting things into spaces. It's easy to go from vinyl to PVC and back and still allows for modular systems with valves to replace individual components. I solve the problem of water friction and reduced capacity by using larger diameter tubing and piping than the pump requires. You also get improved gph by avoiding all hard angles (which it looks like you have already done). For example, if the pump has 5/8" in and outputs I'll immediately convert to a 3/4" system before and after the pump so the pump is the bottleneck. Good luck!
Oh right. I kind of overlooked that tbh. Hopefully the EcoPlus is quiet. My stand isn't touching my wall though, and my walls are old and made of gypsum lathe and plaster, they're nearly cement which may be better or worse lol.It is louder because the rigid piping transmits vibrations from the pump to everything they touch. Vinyl tubing is soft enough that a lot of the vibration stops. I had the stand against the wall and a pipe touching the wall behind the stand. The entire wall hummed most annoyingly.