Well im planning on buying some zoos and wondering how do you get more without spending money, do they just grow new polyps after a period of time or do you have to do a fragging process ?
Zoas will reproduce asexually and spread from their point of origion. If you want them in several places in your tank, you will have to frag. If you want a single large colony, just leave them be ~ if conditions are right, they will spread on their own.