I use PVC stands all the time. Especially with newly introduced corals. LPS corals are often damaged around the edges and bottom during shipping. Placing a damaged coral in the sand simply invites infection. Once the coral is well established, and any wounds have had time to heal, Sand isn't that big a deal. I still use PVC, wedged into rock work, to support some LPS. The pipe can be hidden by rocks, and the corals expansion. I have my new elegance on a 4" PVC pipe.
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