To all those who doubt, as I've had in the past with my marine aquarium , toxicity and compatibility of soft corals, on the relationship between these, LPS and SPS corals, carry a simple text and clear of Charles Avallone, From an article on corals in the online magazine of ReefItalia .

"The disturbance created by soft corals, including Sarcophyton alcionidi such, Lobophytum, Xenidi as Sinularia and Xenia and Anthelya, occurs with the release of toxins identified terpenoids or Sarcophine that released into the water, once perceived the proximity of different species of corals , cause alleopatia, inhibiting the growth and even the victim of poisoning coral succumbing. In this regard, in an aquarium populated by a mix of soft and hard corals, it is always advisable to keep the activated carbon in the sump to be changed often. L ' alleopatia is something invisible and serious and should take precautions. All this of course after having placed corals at a safe distance, keeping in mind, any fighter everted tentacles, as well as the mesenteric filaments and the growth of the same, so as not to see succumb to a valuable piece of our reef home. "