you should secure those elevated water water containers with water heater straps, the question is, what are you gonna secure them to? Why did even elevate them? just use the dc pump bc waiting for gravity sucks.
And now you have a large system, why are you still messing with 5 gallon jugs? You should drill through that stucco and have an automated water change system. Im still seeing small tank mentality.
Once you have an automated system down youll likely use a lot more salt, so stock up on that IO. Its like when you reload ammo, you tend to shoot more. The coral will thank you for it.