Brown Feather Dusters

[Gilbert]

i have these brown feather dusters that just popped out of no where and are camping out with a colony of zoas. i think the zoas look pretty cool, they're yellowish skirts with brown mouths, but im worried that this tube things might be bad. they have been on my sand bed for a long time now and i was think about giving them to the pay it forward program. but dont want to infest someones tank. should i toss the colony or is it ok to have in my tank




all the polyps are usually open but i had just stirred up the sand