I was thinking the same thing and so I read the following article: http://www.reefkeeping.com/issues/2005-06/sp/
After I read it, some doubt about the identification remained in my mind.
An acid bath is sometimes recommended with a solution of vinegar and ro/di water. You can also use muriatic acid and water, but at a much lower concentration.
A couple of years ago I stayed at the Hilton Waikoloa resort and they have a beach made up of large stony coral rocks. I picked up 3 nice pieces and brought them back with me as carry-on. No one in the airport said anything. These rocks are the nicest pieces I have.
I cut out the front grill and just push the center of the impeller in a couple of times until it turns the correct way. A bonus is the added flow without the front grill.
Get a hang on skimmer.
You can also use the canister with carbon and GFO plus some floss.
Also, definitely go with RODI and save yourself a lot of headaches.
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