goniopora

[poo-tang]

i recently acquired a green flower pot coral.
i didn't know they were regarded as a very difficult species to keep but from what i have found recently they are...is this correct?
anyways i have few specific questions
do they have zoooxanthellea? i've been reading they have to be feed daily? true?
mine has many "heads' and seems to be in great shape and opens all day and also has many small, newer heads so i think it is doing well, just want to keep it that way.