While DW works on sorting stones, I managed to get the hole for the skimmer dug:
It's an Atlantic Water PS-4000.
Yeah baby! Finally!
I had about 1" of space around the skimmer (three sides) and plan on backfilling with some of the soil from the trench (to bring power and send water to the falls).
I placed a concrete block in the skimmer to keep it in place, put the spacers inside to keep from collasping walls, added the lid to keep out stray dirt.
Next, I'll start the trench for the electrical and water return.
Quietman
