Alot of people dont have the funds to go all in even if they wanted.
I keep my reefs simple for me anyway.
Simple to me is:
Larger systems.
Live rock
Skimmer
Return pump
Carx
Correct flow
Mesh socks.
No controller except for powerheads
I am running ozone in my new 150 with orp controller
I started this 18" nano cube when a few said AI 16hd's wont grow corals. Was a 30+ halide user.
After this I am now 100% leds and wont go back.
I set this up with live rock from my other systems.
1 powerhead, 1 return pump, and thats it.
Dosing was esv 2 part, I did try AFR and it worked well when I rebooted this system after I had taken it down.
10%- 2gal WC once a month.
Here it is from zero to 10 months.
It was by far the easiest system to run. Only problem, if you could call it one, is that it grows in very fast and space is a premium.