Interesting. One inch PVC? I like the idea, doesn’t it interfere with the flow of chemicals? Do you have a photo of this set up to share?
The agitation of developer is certainly a hot topic, understandably. So many different variations, so little time. I too, struggle with this topic. I’ve been using 510 Pyro with some success, evenness being the devil as I tend to like a big sky in my work.