Doing a little bit of research on zoas I came across this artical. You may want to think about using caution while fragging your zoas and palys.
http://blogs.discovermagazine.com/notrocketscience/2011/04/05/world%E2%80%99s-2nd-deadliest-poison-in-an-aquarium-store-near-you/
I also came across the legend behind the toxin, i thought it was worth sharing.
Ancient Legend:
Again nighttime wails of anguish pierced the air above a small Hawaiian fishing village on the island of Maui near the harbor of Hana. That evening, when all the outrigger canoes had returned from the sea with the day's catch, yet another fishermen was missing. Desparately seeking answers, the villiagers placed the blame on the hump-backed loner living in the cliff above.
Swarming up the ridge and ripping the tapa cloak from his back, they uncovered gaping rows of triangular teeth within a huge mouth. They had caught a Shark God, one with an insatiable lust for human flesh. Their suspicions were correct. Each day after the canoes went out fishing, the hunchback had leasurely come past the villiage and gone swimming for his breakfast.
The enraged fishermen mercilessly ripped the hunchback to pieces and burned him completely. His ashes were thrown into a nearby tide pool. But, the continuing malevolence of the demon slowly transformed the pond into a pool of death. Ugly little brown anemones began to cloak its walls. Much later, it was found that these "limu", when smeared on the tip of a daggar or spear, would perpetuate the evil of the Shark God by bringing sure death to the victim. Thus, the stationary little animals in the tide pool came to be known as the "Limu Make O Hana" (Seaweed of Death from Hana).
http://blogs.discovermagazine.com/notrocketscience/2011/04/05/world%E2%80%99s-2nd-deadliest-poison-in-an-aquarium-store-near-you/
I also came across the legend behind the toxin, i thought it was worth sharing.
Ancient Legend:
Again nighttime wails of anguish pierced the air above a small Hawaiian fishing village on the island of Maui near the harbor of Hana. That evening, when all the outrigger canoes had returned from the sea with the day's catch, yet another fishermen was missing. Desparately seeking answers, the villiagers placed the blame on the hump-backed loner living in the cliff above.
Swarming up the ridge and ripping the tapa cloak from his back, they uncovered gaping rows of triangular teeth within a huge mouth. They had caught a Shark God, one with an insatiable lust for human flesh. Their suspicions were correct. Each day after the canoes went out fishing, the hunchback had leasurely come past the villiage and gone swimming for his breakfast.
The enraged fishermen mercilessly ripped the hunchback to pieces and burned him completely. His ashes were thrown into a nearby tide pool. But, the continuing malevolence of the demon slowly transformed the pond into a pool of death. Ugly little brown anemones began to cloak its walls. Much later, it was found that these "limu", when smeared on the tip of a daggar or spear, would perpetuate the evil of the Shark God by bringing sure death to the victim. Thus, the stationary little animals in the tide pool came to be known as the "Limu Make O Hana" (Seaweed of Death from Hana).