I like the Rainbird free flow manifolds
We use the 6 port free flow ones (1/2in threaded)
Alt Part# MANIFRE6S (sell them on amazon)
Here are some of the other
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You will want a timer that will go down to seconds. One's Ive been using are (also amazon special)
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Other setup is just simple cheap PVC elbows, T's, and 90's. You can choose to go tubing but honestly its more expensive. I like soaking all of it in bleach after a run so why I like the pvc.
For 6-8 plants I would go pvc square with 2 - 4 ports unless you ever want to run more. Then I would go to the 6's or how many you will need for 2 drippers a plant.
Your basic parts list is:
1 - 1/2 schedule 40 pvc
5 - 1/2 90's slip
1 - 1/2 T slip
1 - 1/2 in slip to 3/4 threaded female (see below)
1 - 3/4 barb to 3/4 thread (you can go 1/2 here I run 3/4 to the pump since im running 17 plants off 1 loop)
2 - 1/2 T slip to threaded female on top (or however many manifolds you running)
2 - 1/2 threaded sprinker risers (sprinkler isle at hardware store. a little taller then your pot or how many manifolds you running)
1- roll of 1/4 drip line
choice of drip stakes (no thx) or 1/4 drip line supports
Glue, primer, and pvc cutter
Just a side note If running 2 drippers per plants and running 8 plants i would use the ecoplus 710 gph bottom draws. It might be overkill for this but that will secure even watering to all the sites. What I use for my 17 single drippers.
That is the setup I use for 4x4's
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edit: parts a little different in this list since I used a 90 elbow to barb and used a strait male adapter in that pic