A while back I bought a zoa colony on a mussel, recently the top portion of the colony is doing great from what I can see but the small polyps towards the bottom of the mussel are not opening, the top part are exstended nicely and look good it’s just the bottom. I did light acclimate them so that should not be an issue either. Is this just zoas being zoas or is there something I’m doing wrong. Also I have heard of dosing iodine, anyone have any input?