Looks awesome Billy.. Pullin up a chair for this one
I have a theory that the top feed is very needed fred.. I did a few grows where the roots never reached the bottom, when I only had little drippers from above.. My best success came from massive feed from the top of the Hydroton.. so I now run both top and bottom feed...I definitely love the feed sequence split above and below the upper container for even more increased flow and dissolved oxygen with waterfall effect in each grow tank , along with the 3 separate drains FTW to insure said increased flow with less root blockage.........
. thats what folks need to understand with pipe sizing.. The thing I learned at college was that in a positive pressure situation, the pressure will equalize in the larger bore pipe, giving pretty much equal pressure at all of the smaller outlets..I had a manifold all the way around the room
Here's one for fred.. I've took a different approach to posting the pics, hope you can see them now Bud... hehee...
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peace
BL