Can you show your drip system? Also how is it that you have zero weeds?
I found the drip irrigation plan. I needed about 100 ft of 1/2" tubing to run from the faucet on the back of the house to the garden fence. Inside the fence, I needed about another 50 ft of 1/2" tubing for distribution to the boxes. Inside the planting boxes, I used 1/4" dripline tubing with 0.5 gallon/hour emitters spaced every 12" along the tubing.
At the faucet, I added, in order, a backflow preventer, filter, pressure regulator (25 PSI, same as in my rear tire), and female hose adapter to connect to the 1/2" tubing going to the garden.
Also bought the tubing tees, crosses, elbows, plugs needed to connect tubing together. I added 1/4" valves at the start of the 1/4" dripline so I could shut off / turn on water supply to each line individually.
To run the 1/2" tubing to the garden, I used a flat spade to slice the ground/grass down a few inches and lifted to make a gap. Then, I shoved the tubing in and stomped it down. Simple. In the garden I decided to run the 1/2" tubing under the side of the boxes and then come up inside to supply the emitter tubing.
Actually, I didn't take that many photos during installation. Here's the best one of install and two of the finished 1/4" emitter tubing. Only three per box in the photos but I ended up adding two more per box for a total of 5 lines of emitter tubing per box. That gave me about 40 0.5 gal/hour emitters per box for rate of 20 gallons water/hour/box. So, theoretically, if I run it for 15 min I add 5 gallons of water to each box.

You can see the shut off valves on the emitter tubing in this photo.
