We have low to moderate lighting (just PC on top), flow is dual outputs pointing to the sides and down to keep food in the water column as well as a small powerhead aimed at the middle and down. Research we did said they only feed out of the water colomn, but as you can see from the video, isn't always true.

The main thing is reasonable water quality, some flow and the deep sand bed is important. They drill into the sad with their tails and if it isn't deep enough or too coarse they can damage their tail and die.
they were in with seahorses (sadly learned our lesson about kelloggi the hard way) and now have an aiptasia eating file fish (green filefish) in with them with no issues. Anything peaceful will be fine as long as there is enough food to go around.
We have a few small pieces of rock in with them with titan, codium and flame macro. The sump is filled with live rock and cheato. Temp is kept around 76, but that was more for the seahorses. Currently feeding once a day (and they know when it is time), but may go up to 2 times to see if we get lucky with breeding. lol
They are VERY shy creatures and take some time to get used to people staring at them. Mine still get started with big movements, but now know me as the food lady so I am acceptable now.
Think that is about it. Not a newbie type creature, but don't think they are expert only as most places state.