![Five Reasons Sponges Are BAD For A Coral Reef Aquarium | Reef Builders | The Reef and Saltwater Aquarium Blog Five Reasons Sponges Are BAD For A Coral Reef Aquarium | Reef Builders | The Reef and Saltwater Aquarium Blog](https://reefbuilders.com/wp-content/blogs.dir/1/files/2017/03/glass-sponge-reef-1.jpg)
Five Reasons Sponges Are BAD For A Coral Reef Aquarium | Reef Builders | The Reef and Saltwater Aquarium Blog
Great Bend-Brit Spaugh Zoo - Have you ever noticed one of the zoo's smallest animals? This is a marine pineapple sponge, which is a calcareous sponge. Calcareous sponges are made out of
![Sponge like growths on live rock. What are these growing mostly under my live rocks. They are everywhere. Read online possible pineapple sponges and are harmless? Is that right? : r/ReefTank Sponge like growths on live rock. What are these growing mostly under my live rocks. They are everywhere. Read online possible pineapple sponges and are harmless? Is that right? : r/ReefTank](https://preview.redd.it/f08qs4z9ddc61.jpg?width=640&crop=smart&auto=webp&s=affe96d7be468dcaae47bd229649dbe6ece0d5dd)