| There is a system that used 4 inch irrigation pipe ( the flexible black stuff that costs about $5 bucks for a 10 foot length )but would work just fine with the plastic fence posts. Plants actualy grow in 32 oz styrofoam cups that sit in holes cut into the pipes. The pipes sit at about a 10 degree angle that produces a good flow. The cups were filled with perolite and others were using expanded clay. There are pictures at the link below showing construction details. The system worked very well. look for the PIPE SYSTEM link on the home page. chuck |
Here is a link that might be useful: pipe system
