IME, on average ...
After 1 year, they're cute little colonies. Often more branch tips [potential] than long branches.
After 2 years, it's a large colony, getting a unique shape. Fast growers start to cause space issues [or already have].
After 3 years [those that I've had] ... you've got a really nice large coral, for nearly all IME.
Just throwing it out there.
Personally, you've got a nice sounding setup. Figure where each seems to prefer, and let them sit there. The more you stay out of the tank, the less you adjust them, their lighting, their flow, their chemistry ... the better. Often said adjustments are `making the tank better' IME :lmao: or so I try to excuse them.
But I've had the most remarkable growth + most interesting shapes develop when the coral wasn't moved around the tank, stuff wasn't changed in it's circumstances.
Over time, most corals will require more flow as they grow, get branchy/dense. You don't have to beam frags with flow, moderate is fine at first ... just realize as the tank grows, you'll have to adjust flow, perhaps other things as well.
Give it time ... take pics along the way, and have the patience it takes. Despite whether amazing genetics, phenomenal color, or not ... some of the nicest reef tanks I've seen were dominated by a couple branching/plating sps-types that were given years, and space, to grow to their potential.
And once you've got a good thing going [if not well, well before] ... institute a QT practice. Take it from someone whose Montipora collection went from over a dozen large frags/small colonies to 4 frags of my favorite varieties I managed to save
Pests suck, QT. You've likely got a simple QT setup invested [if not many times over] in the corals in your tank ... consider it cheap insurance.
