Looks good.
I especially like the two reef heads.
I cannot see the return nozzles and that's good. They are evidently
close to the water surface which will avoid siphoning and prevent a
flood of the sump.
You don't know me so you have no reason to trust what I say, but I see
something right off that will help that tank do much, much better.
The water flow is all facing down. Turn it all around. Move the
powerheads down near the sand and face them up so the water streams are
pointing diagonally up to the surface. This is one of the best things we
can do to create good gas exchange so that pH will always be where it's
supposed to be. Now with that you will never have to test pH again, but
Alkalinity and Calcium testing will still be as important as
Temperature and Salinity. The problem you may be having with blowing sand will also disappear.
Okay, I better make one more comment. Maybe your aquascaping is not finished, but I see that the amount of LR sitting on the
sand is preventing the LS from doing it's job. LS is a little more than
half of the biofiltration of a tank. Keeping the sand as clear and open as possible is very
important to reef aquarium health.
Sorry, I've been at this hobby too long.
I just see these things. I wouldn't feel right if I didn't share what I've learned.
Again, you have a good eye for aquascaping.
two gold stars.