Yay pictures!
I love your macroalgae.
I still have cup corals on my rock. They didn't all survive but a bunch did. Initially I was dosing DT's but I have since switched to a combination of Reef Chili & Cyclopeeze, both are powdered so it's just easier for me.
Even skimming this thread is an accomplishment! It's massive
It's split tons of times and we had a couple before "Our TBS." I'm not sure if you've looked at the previous ones: Name that thing on my TBS rock (Part 1 & 2).
Good luck mantis hunting!