I recently took out 40 pounds of my live rock I had in the tank for 3 years to help start a tank for a little girl suffering from cancer. Wanted to give her a relaxing saltwater Aquarium to look at while laying at home recovering. Now I'm in search of some replacement rock. I'm thinking of using Real Reef, Marco Dry Rock or Carib Sea Life Rock. Don't want to go with Wild live rock as I don't want to introduce anything bad to my established reef. Which would be better? Thanks!!