I am building another aeroponic bucket and am building my own manifold. I have had alot of success with what i am doing i just have a question about the manifold design. I look online and see most people use an H (top down) design. with the pump in the middle. What are the advantages of using the H as opposed to an 0 shape with a complete square of pvc. Do the end caps help build pressure where a loop system would just circulate the water? Thanks
AFAIK, any shape is good, as long as it's sealed (so no open ended lines, for example) so that pressure can build up inside the pipe.