christmas tree:
It will often close up its tentacles at night, resembling a round or oblong potato and unfold its branches during the day resembling a Christmas Tree with drooping branches. Placement in the sand, gravel, or rubble at the bottom of the reef aquarium where the light levels are lower and with adequate water parameters should help it to thrive. The reef aquarium should have moderate to strong water movement. It does not contain symbiotic algae, so lighting is not a pressing requirement, however this means the Christmas Tree Coral must be fed.(meaning they are ok normally with standard lightin)
The diet should include live baby brine shrimp, plankton, and other small foods designed for filter feeding invertebrates. For continued good health, it will also require the addition of strontium, iodine, and other trace elements to the water.
anemones need intense lighting, and have many special needs, and IMO they should not even be in aquariums, they have a very low survival rate(and several moths to 2 years does not indicate success, they should live 100+ yrs), others will disagree about their ease of care, but most of them also have not had them more than a year, so they feel they are successful having one for several months, there are very few people woho have had one for over 5 yrs, myreccommendation is to not get anemones, especially for someone who needs to ask about them(odds are they don't have enough experience to properly care for them(, sorry if i sound upfront, but IMO, we do not know enough to properly care for them