I'm in the middle of my 1st ever RDWC and I was terrified to use pipes that small for fear of clogging and ultimately overflows. I chose 2". What I have found is that once the roots get thick, they don't really go into the pipe anyway. They get so dense that it just doesn't happen. Personally, I still probably would not try anything less than 2" but I always error on the cautious/overkill side anyway.
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That is a badass plant. I like the wood frames you mounted the led's on.
Yeah I did not realize how big the roots would get. Once I pulled out the first clog the root's did not grow aggressively into the pipes like before, I think they just kind of found the way in there the second time. The long part I pulled out is still trailing around at the bottom of the root ball. I will have to get a pic of it.
I am going to run some auto's in here I got from Seedsman next, just because I think they will fit this system better being smaller plants.
After that is 2x HDX totes and a 20 gallon rubbermaid can for a res. I see now two plants will fill a 5x5 no problem.
2" bulkheads and piping for sure.