Radio active Zoos

This is awesome! I have a frag of 5 polyps of zoos and they never open fully like this, do you have any suggestions?

Zoos need moderate to high flow and T5HO to open up fully. If you don't have a T5HO , then try to place the zoos closer to the light you have ( on the upper half of the tank). The colony you are seeing just had 30 polyps when I started. The whole rock is full now and I am even making several frags from this .

Try feeding baby brine shrimp or marine snow or any plankton food. Although they dont always eat it.