Yes that was my concern with the 4 inch on the tomatoes. I was worried that they would clog easy. but I am also trying to find a way to make the container a functional area to wrap the vines of the indeterminate plant. I could simply go with 5 gallon buckets for them, but I was trying to avoid that :P.. I will see what I can come up with in the 6" PVC area and see if I can make the cost feasible. I want to make something the plant can spend a long time in, and wont be too maintenance intensive to do so... I should probably stick with the 5 gallon buckets for them lol.. I just hate drilling holes in perfectly good buckets to make the recirculating system :P.. I will be doing about 5 varieties of tomatoes as time goes by. Different tomatoes for different purposes.
I will have them sparated by small walls to help prevent cross polination since a couple are heirlooms.
but with hope I can get them all to grow on the same
nutrients to make my life a little easier :P.