Question: who has chilies for a long time - is there any growth, post shot of tank and a coral, what are you feeding, how water is cleaned. Thanks!
I have 3 kinds - almost year, half year and a few months, not in order listed below.
This is wide kind with a small pinkish-white polyps, warmer red body color:
contracted:
close-up (ignore the yellow, sun spawns):

The only one, who tried to disconnect from attached stone.
This is similar, but with pure white polyps and thinner branches. Large colony, but looks like miniature. Both corals here are the same:
And the different, vertical cactus shape, cold red body color, larger white polyps. Seems to be from the warmer sea - closed at 75.4F, when the wide kind (with sun babies) was wide open. Could be coincidence, of course. Also most light-sensitive. Accepts the bigger food.
Shots were made in different times, by different cameras, in different tanks. All - IMHO and E (wink).
- Flow: They better to be placed in a high flow, mine were in less than a foot from powerhead ~600gph laminar flow. 150 gph reflected - in another, nano tank.
- Food size - I have impression, that 50-250 mk is accepted (ZoPlan range), but could be more or less sized. I would not argue about that ingestion doesn't mean much.
- Frozen cubes particles, ZoPlan, crushed parts of cyclop-eeze - that they receive in my tanks. Others may have access to a special small-sized food. Tried Micro-Vert, Chroma-Plex, Zoo-Plex - as I gave nothing at all. Strange.
- A lot of food, 5-8 times more, than recommended on the label. If food is given during all the day - the coral is open almost all day. If not - is open late evening and morning, before lights are on.
- Water quality becomes a problem. Will try to move some of them in separate nano-tank for a feeding and cleaning water after that.
The corals from the ocean can went dormant for a months, then, in right location, opened, as if nothing happened - as was said before. Except the number 2 in a list - small white polyps on a hand-shaped body - never closed for a long time, have it for a few months only.
Frag, cut from the vertical coral, is doing much better.
Red finger gorgonian has similar polyps, but larger - easier to feed. Skinny and takes a lot of space, but easier.
Anyway, I will use micron filter sock and protein skimmer, water is polluted too quickly, and with less feeding - less polyps opening, alas.