I would say wow, but that would reqire my gathering my jaw from the floor. Stunning.
Your plumbing work for the circulation is fantastic. Creating wave effects and surging without a surge tank is something else, nice. Nice touch also on the never closed valves. Really well thought out.
Only thing I could think of, would be to pull your backup Ebo heaters and put in titaniums. Read too many cracked glass heater horror stories.
Again, amazing.
I hope to have a similar setup someday.
Krabs