Large Polyp Stony Corals are generally larger calcareous corals with large fleshy polyps. LPS hard corals produce long sweeper tentacles which they use for feeding, and to keep other coral away, so care should be taken in placing your LPS Coral as it will sting, and in some cases can kill other species of coral. Large Polyp Stony Corals extension of the tentacles depends upon the amount of light, current, and whether the coral is feeding. Some LPS corals have symbiotic algae zooxanthellae hosted within its body that provides the majority of its nutritional requirements through photosynthesis. but feeding your coral will still be needed. You should feed your LPS coral a combination of micro-plankton, Cyclop-eeze, baby brine shrimp, Mysis Shrimp or foods designed for filter feeding invertebrates. Care should be taken when acclimating your coral. (see ower care guides for proper acclimating procedure) Keep water conditions high and consistent, the addition of strontium, iodine, calcium, and other trace elements to the water will help keep your corals in good health. Your temp. 72 to 78, sg 1.023 to 1.025, ph 8.1 to 8.4, dKH 8 to 12. Your light and water flow will vary on the type of LPS coral but most will require moderate to high lite level, and Medium water flow.