Yep, Tubinaria are all LPS. Its the same genus as the scroll corals and pagoda cups.
So far I have found low light holds the green color of my frag the best. The polyps open up at night after blue lights are off, they have clear tentacle like polyps. I have only spot fed it a hand full of times, I'm guessing it picks up on other stuff I broadcast feed too, which is powdered foods or frozen cyclops, rotifer, and plankton. My tank is kinda high flow everywhere so I put it at the bottom blocked by some larger corals for the moment, I'll be finding a more permenant spot eventually. I read they are found near euphyllia and lobos in the wild, so I'm guessing they like that mid-low flow where they can feed on leftovers and fish poop settling in the ocean.