Low light and an lowish uplifting flow. Can tolerate/adapt to a pretty good variety though, but it will tell you what it likes best. I spoke with
@Robin Haselden ’s mentor about mine and he recommended putting it on the bottom underneath a powerhead. So the water is moving upwards and pulls the polyps up and out, you want it “reaching” for the best health and size/appearance. Ive had it in several different spots in the tank now, and this is its favorite.
it needs to be fed a lot, it’s more of a filter feeder as opposed to photosynthetic. (I feed mine twice a day) Comes from Indonesia. Not sure what sort of cuc you have in your tank, but I stopped spot feeding and switched to broadcast because my cleaner shrimp would irritate the heck out of it every time I tried to feed.
I mounted mine on a small rock and leaned it sideways so the water would hit it at an angle on its way up the back wall, not sure if it matters if it’s directly on the sand or not, but you definitely want some flow going “up” across the base. I’ve also seen them mounted sideways in horizontal flow if you feel like getting creative