BUILD
IF YOU HAVEN'T ALREADY, GET THE MATERIALS YOU'LL NEED HERE.
Here's what your system will look like when it's done:

HAVE THE FOLLOWING TOOLS HANDY:
MALLET, DRILL, 1.25" HOLE SAW, 3/8" DRILL BIT.
Let's get started!
First, assemble your steel shelving as shown:
Insert elbows into buckets:

Now let's build the inflow PVC structure. Cut your 3/4" diameter PVC tube:
And assemble your inflow as shown:
Now let's assemble your outflow. Cut your 1.5" diameter PVC tube:
And assemble:

Cut three 8" pieces of flexible tubing and insert. Also attach drip irrigators: