This will sit inside your pvc pipe on top of the flange like so. Use a filter pad before adding your media. One in the bottom and one between your sulfur media and ARM media if you're going to be using ARM on top.
Next drill two holes in the ovc body with the 5/8" forstner bit. One hole has to be aligned with the bottom elbow you glued earlier. Use a ruler for that. Drill the other hole slightly higher. This will be your effluent out. Tap this one out.
Tap the 1/2" T
Pump section:
Cut a 1" piece of CPVC
Drill with the 1/2" drill bit into another piece of pipe this could be any length. You'll cut it later. This will fit into the output of the maxijet.
Glue both pieces to the maxijet.