Yes, Noctua fans are also the best PC fans I know, especially when it comes to their service with spare parts and accessories. However, I decided against PC fans in this setup. I wanted more airflow and used 12V car fans with 3D-printed parts to attach them to the frame. Unfortunately, they are a bit too loud for my liking, but the airflow is very good.
In principle, I also have a diaphragm pump from the German manufacturer Schego. These are excellent pumps, with spare parts available even after decades. However, I wanted something very small and aimed to run everything possible on 12V.
I initially misunderstood your solution; it’s a bit too complicated for my needs. I tried writing a Custom Action with ChatGPT to implement my application, and it worked perfectly on the first try. After a duration elapses, it sets another PWM value. This way, I can adjust everything flexibly and customize the intervals. If anyone is interested, I can post the code here.
But still, thank you for your efforts