top feed drip system

some of you guys might remember my other post "aeroponic ebook on ebay" well a couple of the pro's on here told me I would run into a couple of propblems with that design. zandor said I should go with a top feed system and I think he is right. Can anyone help me design a top feed system? or point me in the right direction for info.

Here is what I already have: 30 gal. res. 1/2" pvc tubing, aqua via 3600 pump, growing chambers made out of (4) 6foot fence post with 8, 3inch holes cut out, and misters. thanks

drill holes in the PVC feed pipe and get some threaded risers or even threaded fittings and just use drip tube. It's not that hard. The PVC runs along side the square PVC and one riser for each pot.

also it wouldnt hurt to throw a few airstones into the res.